Free · in your phone's browser · nothing uploaded
What key am I singing in?
Tap, hum or sing a bit of a song for seven seconds, and hear its key. Then hear your line in a running club track that follows that key.
The microphone opens when you tap, listens for seven seconds and closes. Nothing is recorded or sent anywhere.
How it finds the key
It reads the notes you sing, one at a time, and counts how long you spent on each. Some notes carry a key more than others: the home note, its fifth, the third that makes it major or minor. The tool compares your counts with the pattern of every major and minor key and names the one that fits best. It doesn't judge your voice, only its pitch.
The runner-up is the relative key: C major and A minor use the same seven notes, only the home note differs. That's why both are playable. Your line plays over each key's home chord, and one of them will feel like it lands.
Getting a clear answer
Sing a bit of a real tune, ideally one that ends where it feels finished. More different notes give a surer answer; one note held long says nothing about a key. Hum or sing "la", and come close to the phone. Notes shown faded are outside the key: a passing note, or a bit of drift.
Then make something of it
Your line goes into Brumm as a melody, in time, inside a club track with a beat and a bass. The app follows your melody's key, so the chords fit what you sang. No account, no upload: the line travels inside the link itself.
Your voice stays on your phone: the tool reads it in the browser and keeps nothing. How the site counts visits.