AUDIO → HARMONY
Find the chords
in your audio.
Upload a song. See every chord change.
Drop audio here or
MP3, WAV, M4A, FLAC · Max 14 MB · 10 min
Private, on-device analysis. Your audio is never uploaded.
CAmFGSAME SONG.
DIFFERENT LAYERS.
CHORDS REVEALED.
Acoustic Example
2:18 · Acoustic Guitar
HOW IT WORKS
From audio
to harmony.
Drop your track
Upload a song or recording. Discover the harmony hidden inside your audio.
Watch chords unfold
See the chord progression on a beautiful timeline, synced with the audio.
Play along
Switch between guitar and piano to see how to play each chord.
VISUALIZE THE SONG
Every change.
Right where it happens.
The chord timeline shows each chord across the entire song. Click any section to jump, listen, and see how to play it on guitar or piano.
PLAY ANY CHORD
One song.
Two ways to play.
Select a chord from the timeline to hear its notes. Explore a C major fingering example on guitar and a keyboard guide, then practice with the original audio.
C Major on Guitar
123Notes in this chord
C Major on Piano
FAQ
Questions,
answered.
How does automatic chord detection work?+
Your browser downloads a local analysis engine when you first analyze a recording. It estimates chords on your device; your audio is not uploaded. Complex music can produce incorrect chords.
Can I use an MP3 or WAV file?+
Yes. Choose MP3, WAV, M4A, or FLAC files up to 14 MB and 10 minutes, depending on your browser’s audio support. The first analysis needs an internet connection to load the engine.
Can chords be wrong?+
Yes. Complex arrangements, background noise, and unusual voicings can make automatic detection less accurate. The chords in this demo are an example progression.
Do I need to know music theory?+
No. Select a chord to see its notes and an instrument guide. Use Play chord to hear the harmony and practice at your own pace.