Choose a source
Private chord alpha: choose an MP3 or browser-supported audio file, up to 12 MB. Your Play interface uses LV-Chordia chords and SHADOW synchronization. Verified uploads reuse shared automated analysis. Your Library and chord edits stay private; audio is not stored.
Drag & drop an audio file
or
MP3, M4A, WAV or FLAC
Recent sessions
Search YouTube or paste a video link.
Select a video, then press Transcribe song. Your chords and YouTube link are saved to your Library. Temporary audio is removed after processing.
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Guitar chord diagrams
Standard tuning · left to right: low E to high E · × muted · ○ open · numbers show fingers.
Chord markers
- C principal chord of the measure
- Am chord change within the measure
- → G the next measure’s chord starting early
Edit on the Playback grid
Your corrections are private and never overwrite the original analysis.
Synchronization diagnostics (developer)
Observational only — does not modify playback or transcription.- Audio time
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- Current chord
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- Next chord
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- Nearest SHADOW beat
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- Chord-to-beat offset
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- Analysis version
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- Cache match type
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- Fingerprint offset
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Advanced tools
Stems
Separate this track into vocals, drums, bass and accompaniment. Stems stay in this tab; download them to keep a copy.