From a musician, for musicians — mx3.ch/esysc

Chord Recognition, Analysis & Transcription

Free online chord recognition & analysis. Upload audio or paste a URL, detect chords and key in real time, and follow the detected progression. Export in multiple formats.

Launch Transcriber

🆕 What's New

Mobile navigation card with collapsible menu on small screens
Header and controls now wrap cleanly on phones (no overlapping items)
Better spacing for Home, FAQ, Privacy, and Guides on narrow screens
Top sections no longer get hidden behind the header on mobile
Menu open/close labels are localized and update instantly per language
General touch and readability improvements for phones and tablets
Visual guitar chord diagrams and piano keyboard diagrams that follow the chord playback in real time
Real-time bass tabs that follow the bass line during playback, with printable Bass Tabs (PDF) export
Printable piano keyboard diagrams for every chord in the song as a PDF chord chart

📋 Workflow

Step 1: Open Transcriber, upload file or paste URL
Step 2: Click Analyze chords
Step 3: (Optional) Click Transcribe
Step 4: (Optional) Use Transpose to change the audio key
Step 5: Review timeline, transcript, and tabs
Step 6: Export as TXT, PDF, iReal Pro, tabs, MIDI, or MusicXML

✨ Core Features (100% FREE)

All features below are available at no cost. This is the free version of Magic Chords. Premium features may be added in the future.

🤖 Automatic Chord Recognition & Analysis: Recognizes chords with high accuracy using Madmom, with Essentia as a hybrid fallback for maximum reliability.
🎙️ Automatic Transcription: Extract lyrics and vocal melody using OpenAI Whisper with support for 9+ languages.
🎵 Real-time Playback: Listen to your audio with synchronized chord highlighting. Adjust playback speed from 0.5x to 2x.
✏️ Edit Chords & Lyrics: Click to edit detected chords and transcribed text. Full undo/redo support.
🎼 Key & Tempo Detection: Automatically detect the original key of your audio to understand chord progressions in context.
🎸 Audio Transpose: Change the audio key in real-time (±12 semitones) while keeping chord notation synchronized. Works in your browser—no file upload needed.
📥 Export in 9 Formats: Download as Chord Sheet (TXT), iReal Pro, PDF, Guitar Tabs (TXT/PDF), Bass Tabs (PDF), Piano Diagrams (PDF), MIDI, or MusicXML.
💾 Save to Local Library: Save analyzed/transcribed songs directly to folders on your computer for offline reuse.
📚 Setlist Manager: Create, rename, and organize setlists in your local library, then quickly switch save targets from the Transcriber.
🔄 Re-analyze from Library: Load a previously saved song and run a fresh analysis or transcription without losing your saved data.
🔢 Bar Offset Correction: In Current Chords, use Set bar 1 to choose which chord starts measure 1, so the displayed bar numbers line up with where the song actually begins (for example, after an intro).

Guides

☕ Support This Project

Magic Chords is free and built on open-source libraries (Madmom, Essentia, Whisper). If it saved you time, consider buying me a coffee.

Support This Project

No file selected

Drag and drop audio/video here, or use the Choose audio file button.

Supported playback formats: MP3, WAV, M4A, OGG, AAC
Chord analysis works with: All formats including AIFF, FLAC, WMA
Max upload size: loading from server configuration...

Direct URL

Paste a direct media URL (YouTube or audio link) to analyze immediately.

Tip: press Ctrl+V to paste and Enter to start analysis quickly.

Cookie Auth

Upload cookies for sites that require sign-in (YouTube, SoundCloud, etc.).

Song Title:

Language:

Current Chords

Confidence: High Medium Low

Bar offset 0

Keyboard: Space/K play-pause, M mute, ←/→ seek 5s.

Speed

Transpose

Chord timeline

Transcript

Library

Setlist

Or drag & drop a library folder here — no upload prompt.

New setlist

Save audio file too

Sharing tip: put your library inside Dropbox, Google Drive, OneDrive, or iCloud Drive to sync setlists automatically.