Free Key and BPM Finder
A key and BPM finder is the first thing to reach for when you want to build on a song, and Veena puts one inside an AI DAW with a personal music producer built in. Drop your song on the timeline and Veena reads its tempo, finds its key and hears its chords, then CoProducer writes new parts in that key and at that tempo. Free, in your browser.
Most finders stop at two numbers in a box. In Veena the reading is the first move of a session: the song is already on a timeline, running at its own tempo, with a producer ready to play along in its key.
What Veena hears in your song
| What you want to know | How Veena reads it | Where you see it |
|---|---|---|
| Tempo (BPM) | Two tempo readers checked against each other, so a loop is never read at double or half speed | The project tempo in the transport bar, and Original BPM in the clip's Match BPM dialog |
| Key | Find Key turns the audio into notes and reads the key from them | The Key field on the clip's Waveform tab |
| Chords | CoProducer's chord reader listens to the audio bar by bar and names the progression and the likely key | CoProducer's reply in the chat |
| Phrasing | CoProducer measures where your take's phrases and downbeat land | The new parts it writes, lined up with your recording |
The tempo read is careful by design. A confident reading, or one where both readers agree on the pulse and only its level is in doubt, sets the project tempo. A take with no steady beat, like a rubato piano intro, keeps its own reading on the clip and leaves the project tempo where it was, so your grid is never set to a tempo the song never had.
How to use the key and BPM finder
- Drop your song on the timeline at daw.veena.studio, or click Upload in the transport bar. WAV, MP3, M4A, AAC, OGG, OPUS, FLAC, AIFF and CAF all import.
- Read the tempo. On an empty project, the first clip you import sets the project tempo. It shows in the transport bar, and the clip's Match BPM dialog shows the Original BPM Veena heard. If a reading ever looks wrong, correct that field and confirm.
- Find the key. Select the clip, open its Waveform tab and click Find Key. The key appears on the clip a moment later.
- Hear the chords. Open Ask CoProducer and type "what chords does this song use?". It listens to the recording and answers with the progression.
- Build. Ask for the next part in plain words, and CoProducer writes it in the key and tempo it just found.
Rather hear it yourself? Tap the tempo in from the metronome's options menu, or set it anywhere from 40 to 300 BPM in the transport bar.
Key and BPM finder vs a studio that builds in your key
A standalone key and BPM finder gives you a number and sends you somewhere else to use it. Veena is where the number goes to work.
| Veena | A standalone key and BPM finder | |
|---|---|---|
| Tempo | Read, checked two ways and set as your project tempo | A number to copy by hand |
| Key | Read from the notes you actually play | A number to copy by hand |
| Chords | Named by CoProducer, bar by bar | Not included |
| What happens next | CoProducer writes chords, bass, melody and drums in that key and tempo | Open another app and start again |
| Your song | On a timeline, saved to your project | Gone when you close the tab |
| Export | WAV 24-bit/48 kHz, MP3, MIDI or MP4, no cap, no watermark | Nothing to export |
Build in your song's key and tempo
This is the part a finder can't do. Once Veena knows your song, CoProducer uses what it heard:
- Parts over your own take. Record or import a vocal, a guitar riff or a hummed idea and ask for chords, bass or melody. CoProducer writes against what the take actually plays, in its key when you haven't chosen a project key, and every part lands as editable MIDI on its own track.
- A whole band around a demo. "Write drums, bass and keys around my guitar demo" gives you a full arrangement at the demo's tempo, following your phrasing, with your recording kept in the song.
- Loops that lock to the grid. A sample CoProducer places is measured too, and a loop with a confident tempo read is stretched to your project tempo without changing its pitch.
- Move the key. Want the song a step higher for a singer? Ask CoProducer to shift the pitch, or use Pitch Shift on the Waveform tab.
- Separate first, then read. Busy mix? Run the stem splitter and read the key from the bass or the other stem, then have the bassline generator write a new low end in that key.
Every part CoProducer writes is yours to edit in the piano roll, mix with the faders and export as often as you like. Veena Pro, at $20 a month, removes the daily request cap and unlocks the premium models; the free plan includes a daily CoProducer allowance.
Keep going
Want the chords written for you from scratch? The chord progression generator builds a progression in any key and style. For the detail on reading and writing harmony, see chords in Veena. The best AI key and tempo detection tools ranks the field, and how AI detects key and tempo explains the signal processing. New to the terms? The glossary defines BPM and a musical key.
Paste this into CoProducer with your song on the timeline:
Try this in Veena
This is my song. Tell me its tempo, key and chord progression, then write a warm Electric Piano chord part in that key for the verse, a round Electric Bass (finger) line that follows the chords, and a laid-back hip-hop drum groove at the song's tempo with the kick on 1 and the snare on 2 and 4.
Frequently asked questions
Is Veena's key and BPM finder free?
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. Dropping a song in reads its tempo for free, and Find Key on the Waveform tab reads its key.
How do I find the BPM of my song in Veena?
Drop the file on an empty timeline at daw.veena.studio. Veena reads the tempo two ways before it commits, so an 80 BPM loop doesn't read as 160, and a confident read becomes the project tempo in the transport bar. The number is also on the clip: open Match BPM and the Original BPM field shows what Veena heard.
How do I find the key of a song in Veena?
Select the audio clip, open its Waveform tab and click Find Key. Veena turns the recording into notes and reads the key from them, then shows it on the clip, such as A minor. Prefer to ask? Tell CoProducer "what key is this in?" and it listens to the audio itself and answers in the chat.
Can Veena tell me the chords of my song?
Yes. Ask CoProducer "what chords does this song use?" and it runs Veena's chord reader on your audio, aligned to the song's bars, then tells you the progression and the likely key. Because the read happens inside your session, the chords, bass or melody it writes next are built on the harmony you actually played.
What happens after Veena finds the key and tempo?
It builds with them. The project runs at your song's tempo, and when CoProducer writes chords, bass or melody over your own pitched recording, it writes against what the take plays and in its key, unless you chose a project key yourself. Every part lands as editable MIDI on its own track, ready to change note by note.
Does Veena's key and BPM finder work on my own recordings?
Yes, that is what it's for. Import a demo, a voice memo or a loop in any of 13 audio formats, or record a take straight into Veena, and CoProducer measures its tempo and where your phrases land. No graphics card is needed: the chord reading runs on Veena's servers, and the rest runs in your browser.
Meet your personal music producer
Free, in your browser. Describe the song you want and CoProducer builds it with you.
Make music free