Free Key Finder
Loading the key and BPM finder…
A key finder tells you the tonal centre of a song: the major or minor key its melody and chords sit in. Veena's is free in your browser. Drop in a file and read its key, relative key and Camelot code, then let CoProducer, Veena's personal music producer, build drums, bass, chords and a melody in that key as real tracks you can edit.
Most key finders end at a label. Here the reading goes straight into a studio: the key you find is the key CoProducer writes in, and every part stays editable.
Who the key finder is for
- Producers and beatmakers who need to know the key of a sample or a loop before they write over it.
- Singers and instrumentalists who want to know what key a song is in so they can play or sing along.
- DJs who mix by Camelot code and want harmonic neighbours for the next track.
- Songwriters who want to build a new song in the key of a demo or a voice memo.
How to find the key of a song, step by step
- Choose your audio. Drop an MP3, WAV, M4A, OGG, FLAC, AIFF or AAC file into the finder above, or press Choose audio file.
- Let the reading finish. A background worker in your browser reads up to the first three minutes. Nothing is uploaded and no account is needed.
- Read the key. The Key box names the major or minor key, with a confidence score. Relative key gives its partner and Camelot gives its code.
- Check the neighbours. Open Show compatible keys to see the Camelot wheel for the key, with the keys that mix cleanly beside it.
- Build in that key. Press the CoProducer button under the result and the key goes into a ready-to-send brief in the studio.
What a key reading gives you
| Result | What to do with it |
|---|---|
| Key | The tonal centre. Write bass, chords and melody in it. |
| Relative key | The major or minor partner that uses the same notes. Try it to change the mood. |
| Camelot code | A number and letter for harmonic mixing: B is major, A is minor. |
| Confidence | How strong the tonal evidence is for the reading. |
| Batch table | Up to 200 files, each with its own key, tempo and Camelot code, as a CSV. |
C major and A minor are relative keys: the same seven notes with a different home note. Pick the relative key and the song turns from bright to moody without leaving its notes. The glossary page on the musical key explains how a key is built.
Find the key inside the Veena studio
The studio reads keys too. Import a recording, select the clip, open Waveform and press Find Key to see the key of the audio. Then set the project's key from Change Key in the transport bar, in major or minor, and every part you add follows it. You can also ask CoProducer "what key is this recording in?" and build around the answer. The guide to finding key and tempo in Veena covers each control, and changing the key of a song shows how to move a recording to a new one.
Then the producer walks in
Once you know the key, tell CoProducer what to build: "a 16-bar lo-fi track in A minor at 82 BPM, dusty drums, Electric Piano chords and a round bass". It writes every part in the key you named, as separate tracks, with three takes of each new part to choose from. Need the chords as well as the key? The free chord finder reads the progression across the bars.
Want the tempo too? The same reading appears in the free key and BPM finder, with tap tempo and a click to check it against.
Free key finder: how Veena compares
| Veena | A key finder web page | A key finder app | |
|---|---|---|---|
| Runs in the browser | Yes, phones included | Yes | No, it is an install |
| Reads your own recording | Yes, locally on your device | Varies | Varies |
| Relative key and Camelot code | Yes, with a compatible-keys wheel | Varies | Varies |
| Whole sample folder to CSV | Yes, up to 200 files | Varies | Varies |
| After the reading | CoProducer builds the song in that key | Close the tab | Open another app |
Veena is the free key finder that comes with a studio and a producer: find the key, then write the song in it. Want the whole studio? Open the free online DAW, or find your key free now.
Related reading: Free key and BPM finder · Find key and tempo in Veena · What is a musical key?
Frequently asked questions
Is there a free key finder?
Yes. Veena is an AI DAW with a personal music producer built in. Describe the song you want and CoProducer builds it with you — beats, chords, melody, arrangement and mix — as real tracks you can edit, mix and export. Free, in your browser. The key finder on this page is free to use with no account, and the analysis stays on your device.
How do I find the key of a song?
Drop the song into the key finder above as an MP3, WAV, M4A, OGG, FLAC, AIFF or AAC file. Veena reads up to the first three minutes in your browser and names the major or minor key, its relative key and its Camelot code, with a confidence score. Inside the Veena studio, select a clip, open Waveform and choose Find Key.
What key is this song in?
Add the file to Veena's key finder and the Key box names it, for example C major or A minor. The Relative key box gives the partner key that shares the same notes, and the Camelot box turns the key into a code for harmonic mixing. Your audio is analyzed locally and is never uploaded.
Can I find the key of my own recording?
Yes. Choose a demo, voice memo, rehearsal take or loop and Veena reads its key the same way. In the studio you can import the recording, press Find Key in Waveform and set the project's key to match, then ask CoProducer to write bass, chords and drums around your take in that key.
What is a Camelot code?
A Camelot code is a number from 1 to 12 plus a letter that labels a key for harmonic mixing: B is a major key and A a minor key. C major is 8B and its relative minor, A minor, is 8A. Veena's key finder shows the code and the wheel of compatible keys beside the reading.
Can Veena change the key of a song once I know it?
Yes. In the Veena studio, set the project's key from Change Key in the transport bar, or pitch-shift an audio clip from its Waveform panel. CoProducer also writes new parts in the key you name, so a recording at A minor gets bass and chords that stay in A minor.
Can I find the keys of a whole sample folder?
Yes. Choose a sample folder or select up to 200 audio files and Veena reads each one in turn, giving every file its own key, tempo and Camelot code. Export the table as a CSV for a spreadsheet. The folder and its recordings stay on your device.
Meet your personal music producer
Free, in your browser. Describe the song you want and CoProducer builds it with you.
Open Veena