Song Key Finder: What Key Is This Song In?

Yes. It is free, needs no account and has no usage limit, because the analysis runs on your own device.

No. The file is decoded and analysed inside your browser and is never sent to GrooveSheet or anyone else.

Every major key shares all its notes with a relative minor (C major and A minor, for example), so the two are easy to confuse. The finder names the more likely one and shows the relative as well.

On most pop, rock and electronic music it finds the key or its relative. Songs that change key, modal music, and tracks that are mostly drums are harder, so the runner-up keys are listed too.

Yes. Upload the song to GrooveSheet and it transcribes the drums, bass or piano into sheet music and MIDI. Every song starts with a free 10-second preview.

The key is the home note and scale a song is built on, such as G major or E minor. Knowing it tells you which chords and notes will fit, which capo position to use, what to transpose to for a singer, and which songs will mix together.

The page decodes your file in the browser and measures how much of each of the 12 notes sounds across the first two minutes. That profile is compared with the typical note pattern of all 24 major and minor keys, and the closest match wins. This is the Krumhansl-Schmuckler method used across music research.

The Camelot wheel numbers every key from 1 to 12, A for minor and B for major. Tracks with the same code, or one number apart, or the same number with the other letter, mix together without a clash. C major is 8B and its relative, A minor, is 8A.

No. The free tools need no account and no download. They run in your browser, and nothing you play or drop in is uploaded.

Yes, in any current mobile browser. MIDI keyboards and pad controllers need Chrome, Edge or Opera, on a computer or an Android phone.

GrooveSheet turns any song into sheet music, MIDI and separated stems with AI: drums, bass, guitar, piano and more. Every song starts with a free 10-second preview.