Release Notes

Follow the journey of our product. Here’s a detailed log of every feature, fix, and improvement we’ve shipped.

🎵 PITCH SHIFTING & REAL INSTRUMENT SOUNDFONTS NOW AVAILABLE! →

January 10, 2025

v0.5.2

Zustand State Management Migration & Performance Optimizations (In Development)

Completes migration from React Context API to Zustand for global state management, fixing critical race conditions and audio playback bugs while improving performance.

Features & Improvements

  • PERFORMANCEMigrated from Context API to Zustand for all state management
  • PERFORMANCEBundle size reduced by 7.1% for YouTube analysis page (50.4 kB → 46.8 kB)
  • PERFORMANCEExpected 50-70% reduction in unnecessary re-renders
  • FIXToggle buttons (Roman Numerals, Simplify Chords) now work with single click during playback
  • FIXAudio playback now works correctly in local audio upload page
  • UIRemoved verbose console logs (chord recognition, alignment, key detection, duration)

Technical

  • ARCHITECTURERemoved 4 Context Provider files (AnalysisDataContext, UIContext, PlaybackContext, ZustandSynchronizer)
  • ARCHITECTUREMigrated both YouTube analysis and local upload pages to Zustand
  • ARCHITECTUREFixed circular dependency in Zustand initialization causing race conditions
  • ARCHITECTUREFixed pitch shift hook incorrectly muting audio element
  • STABILITYRemoved deprecated useChordProcessing hook
  • STABILITYComponents now subscribe to specific Zustand state slices for optimal re-renders

October 9, 2025

v0.5.1

Real Instrument Soundfonts for Chord Playback

Replaces synthetic chord playback sounds with professional-quality instrument soundfonts (Piano, Guitar, Violin) using the smplr library. Features lazy loading for optimal performance and seamless integration with the existing audio mixer.

Features & Improvements

  • NEWReal instrument soundfonts for chord playback (Acoustic Grand Piano, Acoustic Guitar, Violin)
  • NEWViolin volume control added to audio mixer panel with independent slider
  • NEWLazy loading - soundfonts only load when chord playback is first enabled (~3s load time)
  • IMPROVEDEnhanced chord playback quality with authentic instrument timbres
  • IMPROVEDComprehensive chord support including slash chords (e.g., C/G, Am/E)
  • UINew violin volume slider with violin icon in audio mixer
  • UIConsistent green color scheme for all instrument volume controls
  • PERFORMANCEFast playback latency (~6ms) after initial soundfont loading

Technical

  • ARCHITECTURENew SoundfontChordPlaybackService wrapping smplr library for production use
  • ARCHITECTURELazy initialization - soundfonts load on first playback, not on page load
  • ARCHITECTUREGraceful fallback to lightweight synthetic service if soundfonts fail to load
  • ARCHITECTUREUpdated AudioMixerService to support three-instrument volume hierarchy
  • ARCHITECTUREComprehensive chord parsing supporting major, minor, 7th, 9th, 11th, 13th, sus, dim, aug chords
  • PERFORMANCESoundfonts cached after first load for instant subsequent playback
  • PERFORMANCEOctave transposition per instrument (Piano: C4, Guitar: C3, Violin: C5)
  • STABILITYBackward compatible - existing lightweight service updated with optional violin parameter
  • STABILITYError handling with automatic fallback ensures chord playback always works

October 8, 2025

v0.5.0

Pitch Shift Feature with Tempo Control

Introduces real-time pitch shifting for YouTube and uploaded audio with automatic chord transposition, playback speed control that preserves pitch, and seamless integration with existing chord playback features.

Features & Improvements

  • NEWReal-time pitch shifting using Tone.js library for both YouTube and uploaded audio
  • NEWPitch shift control panel with slider (-6 to +6 semitones) and visual feedback
  • NEWAutomatic chord label transposition when pitch is shifted
  • NEWChord playback (piano/guitar) automatically adapts to match shifted pitch
  • NEWPlayback speed control (0.25x to 2.0x) with pitch preservation algorithm
  • NEWPitch shift toggle button in utility bar with BETA badge
  • UISemi-transparent pitch shift popover matching audio mixer design
  • PERFORMANCEPitch compensation algorithm prevents chipmunk/deep voice effects during speed changes

Technical

  • ARCHITECTURETone.js integration for professional-grade pitch shifting with granular synthesis
  • ARCHITECTUREPitch compensation formula (12 × log₂(rate)) for tempo changes without pitch changes
  • ARCHITECTUREAudio-source agnostic design supporting YouTube, Firebase Storage, and blob URLs
  • ARCHITECTURESingleton pitch shift service with proper cleanup and memory management
  • PERFORMANCEPlayback state synchronization (play/pause/seek) between YouTube and pitch-shifted audio
  • PERFORMANCEBeat-aligned time tracking with independent interval-based updates
  • STABILITYRef-based tracking to prevent playback sync issues on toggle
  • STABILITYAutomatic YouTube player muting when pitch shift is enabled (visual sync maintained)

September 29, 2025

v0.4.5

Context Migration, Corrections Visuals, and Faster UI

Completes Advanced Context Migration, restoring chord corrections visuals and improving responsiveness while avoiding unnecessary fetches and re-renders.

Features & Improvements

  • PERFORMANCECompleted UI Context Migration for toggles (Roman numerals, segmentation, chord simplification) reducing unnecessary component updates
  • FIXRestored purple vs white chord labels for corrected vs original chords in the grid
  • FIXRoman numeral analysis restored with reliable context sync and no duplicate API calls
  • UIFloating utility banner refined; controls are consistent and do not cause layout shifts
  • UILyricsSection now respects chord simplification via UIContext (no prop drilling)

Technical

  • ARCHITECTUREMoved simplifyChords to UIContext with controlled props and selector hooks (useSimplifySelector)
  • PERFORMANCEAdded focused context selectors and React.memo where beneficial to minimize re-renders
  • PERFORMANCEMemoized UtilityBar and toggle components to reduce render cost in large pages
  • STABILITYReconnected sequenceCorrections to ChordGridContainer so corrected chords render immediately
  • STABILITYPrevented re-fetching on toggle changes by centralizing state and stabilizing effect deps

Core Changes

  • First working release of Docker Images for both frontend and backend services

August 26, 2025

v0.4.4

Responsive Video Dock & Lyrics Sync Fix

Places the YouTube frame alongside the utility dock and resolves lyrics/chords timing conflicts.

Features & Improvements

  • UIYouTube frame placed next to the utility dock to prevent creeping into the footer
  • FIXLyrics service (Music.ai) merging and synchronization conflict resolved for chord-only/silence sections

August 25, 2025

v0.4.3

Video Dock Countdown & Resize Handle Layering

Improves countdown gating for video playback and ensures the floating video dock stays above the split-pane resizer.

Features & Improvements

  • UIFloating video dock now shows a gated countdown overlay and intercepts initial clicks to run countdown before playing
  • UISplit-pane resize handle z-index reduced so the video dock is always above it

August 23, 2025

v0.4.2

Audio Mixer & Refactoring

Introduces synchronized chord audio playback and consolidates audio analysis logic into a single orchestrator for maintainability

Features & Improvements

  • NEWAudio Mixer - Play back chord audio alongside video with beat-aligned, synchronized chord sounds

Technical

  • ARCHITECTURECentralized audio analysis orchestrator (audioAnalysisService.ts) coordinating beat detection, chord recognition, and synchronization with Vercel Blob support
  • REFACTORBackward-compatible facade (chordRecognitionService.ts) delegates to the orchestrator to reduce duplication and simplify imports

Core Changes

  • Audio mixture service supporting chord playback - initial release (no soundfont available)

August 17, 2025

v0.4.1

Roman Numeral Integration & Component Architecture Improvements

Enhanced Roman numeral functionality with guitar chord integration, major component refactoring, and UI/UX improvements

Features & Improvements

  • NEWRoman Numeral Analysis in Guitar Chords Tab - Integrated Roman numeral chord analysis functionality directly into the guitar chords tab for comprehensive music theory analysis

Technical

  • REFACTORINGAnalysis Page Components - Completed major refactoring work across multiple analysis page components for improved maintainability and performance
  • REFACTORINGChord Grid Architecture - Restructured chord grid component architecture with better separation of concerns and reusable patterns
  • REFACTORINGLyrics Transcription Components - Broke down LeadSheetDisplay component into smaller, reusable components: LyricsControls, NoLyricsMessage, and LyricLine for better modularity
  • FIXChord Label Display Consistency - Fixed guitar chord diagram display inconsistency with roman numeral analysis
  • FIXYouTube Video Player Resizing - Resolved video player resizing issues when lyrics or AI chat panels are opened for better space optimization
  • UIRoman Numeral Typography - Fixed typography and positioning for Roman numeral displays
  • UIChangelog Design - Redesigned changelog interface for enhanced readability and better information hierarchy
  • UILayout Stability - Fixed layout shift issues in toggle button groups for smoother user interactions
  • UIAdded background color for cell where modulation occurs to indicate key change

August 15, 2025

v0.4.0

Roman Numeral Analysis & Backend Architecture Refactoring

Major feature release introducing Roman numeral chord analysis and comprehensive backend refactoring for improved maintainability

Features & Improvements

  • NEWRoman Numeral Analysis (Beta) - Added Roman numeral chord notation display below chord labels for music theory analysis
  • NEWKey Detection Integration - Roman numerals automatically adapt to detected song key with proper chord function analysis
  • NEWRoman Numeral Toggle - Added dedicated toggle button with beta tag in the chord grid controls
  • ARCHITECTUREBackend Refactoring - Factored monolithic Python app.py into modular services, blueprints, and endpoints
  • PERFORMANCEImproved chord-to-Roman numeral mapping with robust sequence alignment handling
  • UIEnhanced chord grid with optional Roman numeral display for music education and analysis

Technical

  • Implemented Roman numeral mapping logic with sequence correction handling for accurate chord function analysis
  • Refactored Python backend from monolithic app.py into organized blueprintsaudio, chord_recognition, debug, key_detection
  • Created dedicated service modules for audio processing, chord utilities, and key analysis
  • Added robust chord sequence alignment algorithm to handle timing discrepancies between UI and analysis data
  • Integrated Roman numeral analysis with existing key detection and chord recognition pipelines
  • Cleaned up debug console logs from Roman numeral mapping and authentication flows

Core Changes

  • Roman Numeral Analysis marked as [beta] - feature may evolve based on user feedback and music theory requirements

July 27, 2025

v0.3.5

Enharmonic Inversion Fixes & Beat Detection Optimization

Critical fixes for enharmonic chord inversions and madmom beat detection optimization for songs starting at 0 seconds

Features & Improvements

  • FIXEnharmonic Inversion Corrections - Fixed enharmonic spelling for chord inversions with flats (Eb/3 → Eb/G, Bb/3 → Bb/D) and sharps (G#/3 → G#/B#)
  • FIXMadmom Beat Detection Optimization - Fixed madmom models skipping optimal shift calculations for songs with first beat detected at or near 0 seconds
  • PERFORMANCEChord Grid Alignment - Improved chord-to-downbeat alignment for songs that start immediately with strong beats
  • MINOR FIX6 beats per measure now displayed as 6/8 time signature

Technical

  • Enhanced enharmonic inversion logic to properly handle flat and sharp chord inversions with correct bass note spelling
  • Fixed calculatePaddingAndShift function to separate padding calculation from shift optimization logic
  • Removed aggressive early return condition (≤0.05s) that prevented shift calculation for songs starting at 0 seconds
  • Maintained shift calculation for optimal chord alignment regardless of first beat timing
  • Cleaned up debug console logs from useScrollAndAnimation, Firebase services, and analysis components

July 25, 2025

v0.3.4

Guitar Chord Diagram Database Integration & Synchronization Fixes

Critical fixes for guitar chord diagram accuracy and chord-lyrics synchronization with official database integration

Features & Improvements

  • SYNC FIXChord-Lyrics Synchronization (Partial Fix) - Added musical note symbols (♪) for each chord change to improve sync between chords and lyrics sections, addressing sync issues for chords
  • PERFORMANCEEnharmonic Correction Optimization - Fixed enharmonic chord matching logic and optimized performance from O(n²) to O(n) complexity using hash map lookups
  • BUG FIXChord Padding Click Issue - Fixed non-clickable chord padding for "N.C." (No Chord) vs "N/C" notation handling
  • FIXReplaced hardcoded chord database with official @tombatossals/chords-db database, ensuring accurate chord fingering patterns for all supported chord types
  • FIXReplaced unformatted chord labels under guitar chord diagrams with formatted forms matching beat chord grid

Technical

  • Integrated official @tombatossals/chords-db/lib/guitar.json with 2069+ accurate chord fingering patterns
  • Enhanced chord name parsing to support both colon notation (C:minor) from ML models and standard notation (Cm)
  • Fixed enharmonic mapping to match database keysC# → Csharp, F# → Fsharp for proper chord lookup
  • Implemented comprehensive suffix mapping for both ML model outputs and standard chord notation
  • Removed hardcoded FALLBACK_CHORD_DATABASE with incorrect fret positions and fingering patterns
  • Added support for Unicode musical symbols (♯, ♭) and enhanced chord parsing regex patterns

Core Changes

  • Guitar Chord Diagram Database Integration - Replaced hardcoded fallback chord database with official @tombatossals/chords-db database, ensuring accurate chord fingering patterns for all supported chord types

July 21, 2025

v0.3.3

Chord Simplification & UI Improvements

Enhanced user experience with chord simplification toggle and responsive UI improvements

Features & Improvements

  • NEWChord simplification toggle that converts complex chord progressions into 5 basic chord types (Major, Minor, Augmented, Diminished, Suspended)
  • IMPROVEDSynchronized lyrics toggle converted from checkbox to modern toggle button design
  • IMPROVEDMoved synchronized toggle to lyrics panel header for better space utilization
  • IMPROVEDEnhanced responsive layout for toggle buttons above YouTube frame
  • IMPROVEDMobile experience with horizontal scrollable button container that prevents UI overflow

Technical

  • Implemented comprehensive chord simplification algorithm with support for 5 basic chord types
  • Enhanced LyricsPanel component with header reorganization and improved toggle placement
  • Added responsive toggle button container with cross-browser scrollbar hiding
  • Optimized mobile layout with proper max-width constraints and overflow handling
  • Updated documentation with comprehensive changelog section and feature descriptions

July 19, 2025

v0.3.2

Enhanced Lyrics & Chords Display System

Core implementation improvements focusing on comprehensive chord display and intelligent section handling in the lyrics and chords tab

Features & Improvements

  • ENHANCEDComplete chord coverage in lyrics and chords tab - all chords now display even when outside lyrical sections
  • NEWIntelligent instrumental section placeholders with visual indicators ([Intro], [Outro], [Instrumental]) that support chord positioning
  • NEWAI chatbot segment label integration - section labels automatically appear above corresponding lyrics when segmentation data is available
  • IMPROVEDSynchronized section visualization between beat/chord grid and lyrics display for better song structure understanding

Technical

  • Implemented comprehensive chord timeline merging algorithm that identifies gaps between lyrical sections
  • Added intelligent grouping of consecutive chords into chord-only sections with configurable gap threshold (4 seconds)
  • Enhanced LeadSheetDisplay component with segmentation data integration and section label rendering
  • Optimized chord positioning logic to handle instrumental placeholders, chord-only sections, and regular lyrics uniformly
  • Improved component architecture with proper TypeScript typing and memoization for performance

July 16, 2025

v0.3.1

UI Performance Optimization

Release focused on addressing some UI performance issues

Features & Improvements

  • PERFORMANCEreduced re-renders in ChatbotSection by optimizing buildSongContext with memoization
  • PERFORMANCEdecreased font size recalculation by memoizing
  • PERFORMANCEoptimized chord shift logic by caching shift calculation to prevent redundant calculations
  • PERFORMANCEmemoized row grouping to avoid repeated array operatons during render
  • PERFORMANCEreduced DOM operations, cached active line arrays, optimized deep cloning

Technical

  • Memoized calculateOptimalShift and shifted chords array to avoid recomputation on every render
  • Throttled high-frequency useEffect tied to currentTime to prevent excessive DOM reads and layout reflows
  • Cached character arrays and memoized color interpolation in active lyric lines to reduce render-time CPU load
  • Memoized buildSongContext to avoid object recreation and reduce ChatbotSection re-renders

July 15, 2025

v0.3.0

Song Segmentation & UI Revamp

Major feature release introducing AI-powered song segmentation visualization and temporary edit capabilities for enhanced music analysis workflow

Features & Improvements

  • NEWSong segmentation visualization with color-coded beat/chord grid sections (verse, chorus, bridge, etc.)
  • NEWTemporary edit mode for song titles and individual chord labels with intuitive UI controls
  • UINew UI for guitar chord diagrams under segmentation
  • UIHomepage UI revamp with new layout and structure

Technical

  • Segmentation features supported by LLM learning the context of chords and lyrics transcription
  • Edit mode support temporary editing from users
  • Synchronize beat chord grid between chord grid and guitar chord diagrams

Core Changes

  • Segmentation feature is in experimental mode - expect changes to the feature and its implementation

July 9, 2025

v0.2.6

UI Revamp & Model Selection Improvements

Major UI improvements with HeroUI component migration, streamlined model selection workflow, and enhanced user experience

Features & Improvements

  • UIMigrated to HeroUI component library for better consistency and maintainability
  • UIStreamlined model selection workflow by removing redundant standalone model selection page
  • UIEnhanced embedded model selectors with improved accessibility (aria-labels and textValue props)
  • UIFixed upload audio button styling with proper contrast and blue accent theme (#1e40af)
  • UIImproved API key management instructions with more concise Music.AI workflow setup guidance
  • BACKENDFixed model selection API endpoint routing from direct backend calls to Next.js API routes
  • BACKENDResolved status page localhost endpoint configuration issues

Technical

  • Removed standalone /model-selection page and ModelSelectionInterface component to eliminate code duplication
  • Fixed HeroUIChordModelSelector API endpoint from ${backendUrl}/chord-model-info to /api/model-info
  • Added proper accessibility attributes to HeroUI Select components (textValue, aria-label)
  • Enhanced button styling with explicit background colors and hover states for better contrast
  • Simplified Music.AI API key setup instructions while maintaining essential workflow information

Core Changes

  • Removed /model-selection route - model selection is now embedded in analyze pages only

July 8, 2025

v0.2.5

Search UI Enhancements & Backend Port Update

Enhanced search functionality with improved dropdown width, simplified result display, and backend port configuration update for macOS compatibility

Features & Improvements

  • UIExpanded sticky search bar dropdown width to span full width of search input and upload button combined
  • UISimplified search results display by removing view count and duration metadata
  • UIFixed search results clearing bug when search input is emptied
  • UIEnhanced beat timeline visualization with improved proportional downbeat bars
  • UIImproved mini search box functionality in navigation bar with dropdown results and state synchronization
  • BACKENDUpdated localhost backend URL from port 5000 to 5001 to avoid conflict with macOS AirDrop/AirTunes
  • BACKENDCentralized backend URL configuration through environment variables for better maintainability

Technical

  • Moved search dropdown positioning from form-relative to parent container-relative for full width spanning
  • Removed duration and view count display from SearchResults ThumbnailImage component
  • Enhanced search state synchronization between main and sticky search components
  • Updated all backend URL references to use port 5001 instead of 5000
  • Maintained 400ms debouncing for optimal search performance and YouTube API quota management

Core Changes

  • Backend port changed from 5000 to 5001 - update local development environment accordingly

July 7, 2025

v0.2.4

Critical Stability & UI Fixes

Essential fixes for React infinite loops, layout spacing issues, and production build optimizations

Features & Improvements

  • STABILITYFixed React "Maximum update depth exceeded" infinite loop errors in Lyrics & Chords tab
  • STABILITYResolved circular dependencies in useScrollAndAnimation and LeadSheetDisplay components
  • STABILITYEliminated duplicate beat tracking that caused state conflicts and crashes
  • UIFixed excessive white space above "Analysis Results" title for better visual layout
  • UIImproved guitar chord diagram animation smoothness with reduced scale differences
  • UIFixed musicAI.png image aspect ratio warning for proper rendering
  • CLEANUPRemoved all console logging statements from guitar chord diagram functionality
  • CLEANUPEliminated debug logs from chord parsing and pattern suffix mapping
  • BUILDFixed TypeScript compilation errors and unused variable warnings

Technical

  • useEffect dependency arrays optimized to prevent infinite re-renders
  • Removed setCurrentTime from useScrollAndAnimation hook dependencies
  • Fixed memoizedChords usage in LeadSheetDisplay component
  • Eliminated redundant beat tracking in analyze page
  • Reduced container padding from p-4 to px-4 pt-2 pb-1 for better spacing
  • Image component aspect ratio properly maintained without style overrides

July 7, 2025

v0.2.3

Music.AI Caching & UI Polish

Critical fixes for Music.AI lyrics caching, React performance optimizations, and enhanced user interface with globe icon for translations

Features & Improvements

  • CACHINGFixed Music.AI lyrics caching to Firestore - no more expensive repeated API calls
  • CACHINGImplemented unauthenticated public caching for ML model outputs (lyrics transcriptions)
  • CACHINGUpdated Firestore security rules to support safe public caching of transcription results
  • PERFORMANCEFixed React "Maximum update depth exceeded" errors in lyrics & chord tab
  • PERFORMANCEAdded proper memoization with useMemo and useCallback to prevent infinite re-renders
  • PERFORMANCEOptimized useEffect dependency arrays to eliminate unnecessary component updates
  • UIAdded professional globe icon (🌐) to translate lyrics button with light/dark mode support
  • UIEnhanced visual consistency with custom SVG icon integration
  • CLEANUPRemoved all remaining console logs with emoji prefixes for production-ready code
  • CLEANUPEliminated debug logs from AnalyzePage, AudioProcessing, Metronome, and Auth services
  • STABILITYFixed build issues with dynamic imports and improved error handling in cache routes

Technical

  • Firebase authentication issue resolved for server-side API routes
  • Firestore security rules updated to allow unauthenticated writes to lyrics collection
  • React hooks optimized with proper dependency management
  • LeadSheetDisplay component performance significantly improved
  • Source map errors eliminated from production builds

July 6, 2025

v0.2.2

Performance Revolution & Metronome Redesign

Major performance optimizations with 90%+ improvements and complete metronome system redesign for professional-grade functionality

Features & Improvements

  • PERFORMANCEBeat-chord grid alignment optimization with two-pointer replacing brute force (90%+ improvement)
  • PERFORMANCEReact component memoization reducing re-renders by 80-90%
  • METRONOMEComplete redesign using pre-generated audio tracks for perfect synchronization
  • METRONOME300% volume boost with 360% downbeat emphasis for clear audibility
  • METRONOMEPerfect sync - starts from current playback position instead of restarting
  • METRONOMEContinuous playback throughout entire song duration
  • ANIMATIONFixed critical regression where clicking chord cells froze beat tracking
  • OPTIMIZATIONBinary search O(log n) beat tracking replacing O(n) algorithms
  • OPTIMIZATIONBundle size maintained at 438kB while adding significant functionality
  • CLEANUPRemoved excessive console logging for cleaner development experience

Core Changes

  • Metronome now uses pre-generated tracks instead of real-time scheduling
  • Legacy metronome scheduling methods deprecated but maintained for compatibility

July 5, 2025

v0.2.0

Guitar Chords Tab & Enhanced Music Analysis

Major feature release introducing interactive guitar chord diagrams with professional music notation

Features & Improvements

  • NEWGuitar Chords tab with interactive chord diagram visualization
  • Animated chord progression view that adapts to your screen size
  • Professional musical notation with proper sharp (♯) and flat (♭) symbols
  • Enhanced chord recognition with support for complex chord types
  • Smoother animations and improved visual experience
  • Comprehensive credits section acknowledging open-source contributions

Core Changes

  • Guitar Chords and Lyrics & Chords tabs marked as [beta] - features may evolve based on feedback

July 4, 2025

v0.1.2

Improved YouTube Audio Processing

Enhanced reliability and performance for YouTube audio extraction with better Unicode support

Features & Improvements

  • Improved YouTube audio extraction with better reliability
  • Enhanced support for international song titles and artist names
  • Streamlined setup process for local development
  • Better error handling and user feedback during audio processing
  • Improved performance and stability for production deployments

Core Changes

  • Local development now requires Python backend running on localhost:5001 (avoiding macOS AirTunes port 5000 conflict)

July 2, 2025

v0.1.1

Critical Bug Fixes & Performance Improvements

Resolved critical production issues affecting chord synchronization and performance warnings

Features & Improvements

  • Fixed chord synchronization API failure (HTTP 400 errors) for direct file uploads
  • Resolved 413 "Payload Too Large" errors for files >4MB in blob upload workflow
  • Created new /api/synchronize-chords endpoint for direct chord-beat synchronization
  • Enhanced service worker error handling to prevent console warnings
  • Optimized resource preloading to eliminate unused preload warnings
  • Achieved functional equivalence between YouTube and direct upload workflows
  • Improved production console output with cleaner error handling
  • Enhanced blob upload workflow with proper API contract matching
  • Zero build warnings and clean compilation for production deployment

June 30, 2025

v0.1.0

Production Ready Release

Complete chord recognition and music analysis platform with AI assistance

Features & Improvements

  • YouTube integration with audio extraction using yt-dlp
  • Advanced chord recognition with multiple models (Chord-CNN-LSTM, BTC SL/PL)
  • Beat detection using Beat-Transformer and madmom models
  • Lyrics transcription and translation with Music.ai and Gemini APIs
  • AI chatbot assistant with contextual music analysis
  • Synchronized metronome with Web Audio API
  • Dark/light mode theme support
  • API key management with client-side encryption
  • Firebase caching for analysis results and translations
  • Karaoke-style lyrics with letter-by-letter synchronization
  • Enharmonic chord correction with toggle functionality
  • Lead sheet layout with professional music notation
  • Dynamic chord grid visualization with beat alignment
  • Multi-language lyrics translation support