Key on the Camelot wheel
Five detectors vote on the key. The safe keys to mix into light up.
Name the song.
Then mix the next one.
Hear a few seconds and get its tempo, key and energy, plus tracks that blend cleanly after it.
One More Time by Daft Punk, as Deep Listen measured it
- Tempo
- 123.0BPM
- Key
- 9BG major
- Energy
- 6.5/ 10
- Loudness
- -9.0LUFS
For DJs
What to play after it, with the numbers to back it up
Every pick is measured from its own preview and ranked by how well it mixes: same key or a safe neighbour on the Camelot wheel, and a tempo you can ride.
- Measured matchesTracks by similar artists that checked out as a clean key and tempo fit.
- Left turnsIdeas from AI that stay in the genre but change the mood, still tempo checked.
- TimingIntro length and when to start each pick, from 16 and 32 bar phrases.
Everything it hears, laid out
What you are hearing
Genre, mood, vocals, rhythm and production, written for this exact track.
Hear the blend
A tempo matched crossfade from the song into any pick, with a bass swap halfway.
Playing on your phone?
The mic cannot hear other apps on the same phone. Paste the song link instead.
Crates, no signup to listen
Make a free account only to save songs and picks into lists. Delete it any time in the app.
Questions
How accurate are tempo and key?
They are measured from the 30 second store preview, not the full track. Steady dance records read very reliably. When a key reading is uncertain, the app says so instead of guessing.
Does it record me?
The microphone is on only while the listen screen says it is listening. The clip is used to name the song and is deleted from our server within 3 hours. Details are in the privacy policy.
Do I need an account?
No. Listening and the full analysis work without one. An account only keeps your lists, and you can delete it in the app or on the delete account page.
Is there an Android app?
It is on its way to Google Play. Until then, the browser version works on any Android phone.
What does it cost?
The beta is free.