Guitar Theory · Voice Leading · Chord Detection

Hear it. Understand it. Play it.

Most guitar apps show you shapes to memorize.
Chord Leading shows you why music works.

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The complete workflow

From any song to mastery — in minutes

01 · DETECT
🎵

Ear Lab

Upload a song, record your guitar, or paste a YouTube link. Chord Leading identifies every chord and tempo automatically.

02 · UNDERSTAND
🎸

Voice Leading

See how chords connect with minimum movement. Visualize the full fretboard — not isolated boxes, the whole picture.

03 · PLAY
🎶

Improvise

Practice over your progression with a full backing band. Target notes light up in real time as each chord changes.

🎙 New · Ear Lab Beta

Detect chords from any song

Stop spending hours figuring out songs by ear. Chord Leading's audio analysis engine identifies chords and BPM from real recordings — then sends the full progression straight to your practice session.

📁
Upload audio file MP3, WAV, M4A, OGG · up to 50MB
🎙
Record from microphone Record up to 90 seconds live
Paste a YouTube link Play and we analyze automatically
📱 Add screenshot here
screenshots/ear-lab.png

Everything you need to understand your guitar

🎸

Explore

Visualize chords, scales, arpeggios, and CAGED patterns across the entire fretboard in real time. See connections, not shapes.

ChordsScales CAGEDArpeggiosTriads
🔲

Voicings

Browse every voicing of any chord across the neck. Filter by CAGED shape, string set, position, and bass note.

20+ chord typesAll positionsCAGED filter
〰️

Voice Leading

The technique behind Lenny Breau, Joe Pass, and Ted Greene. Find the smoothest path between any two chords — voicings ranked by movement quality.

Chord-to-chordCommon notesIDEAL rating

Progression

Build chord progressions and auto-chain them with optimal voice leading transitions. Jazz, blues, pop presets included.

Auto voice leadingPresetsMetronome

Improvisation

Practice over your progressions with a full synthesized band. Target notes highlight in real time so you always know where to land.

JazzNeo-Soul FunkBossaPads
🎙

Ear Lab

Detect chords from any audio source. Upload a file, record live, or paste a YouTube link. Automatic BPM detection included.

Audio uploadMicrophone YouTubeBPM detect
Pricing

Start free. Unlock everything.

All six sections are accessible for free. Pro unlocks extended theory, advanced detection, and removes ads.

Free

  • All 6 app sections
  • Chord detection (5 types)
  • Major, minor, pentatonic & blues scales
  • Basic chord types
  • Metronome in 4/4
  • Backing tracks

Pro

  • Advanced chord detection (11 types)
  • 20 chord types
  • 9 advanced scales + all modes
  • All arpeggios and triads
  • Free time signatures
  • Favorites
  • Ad-free experience
Get Pro on Google Play →

Try it right now — in your browser

No sign-up. No download. Full app, zero friction.

Open Web App — Free