Key & harmony
Scale
A scale is the ordered set of notes a piece of music draws on. Major and minor are the two that dominate club music, and which one a track uses is half of what its key name tells you.
Measured in our catalog
61.2% of analysed tracks with a detected key are in a minor scale — 271,306 against 171,751 major.
Minor outnumbers major by roughly three to two across the catalog, which is why so much of harmonic mixing in practice happens on the A ring of the wheel. The useful consequence is that a major-key record is a genuine change of light in a set built from minor ones, and it lands harder than its share of the catalog suggests precisely because it is the exception.
61.2%
In a minor scale
38.8%
In a major scale
443,057
Tracks with a detected key
Measured on 11 August 2026 across public analysed tracks with a detected key, split by mode. Method: the pair that share every note.
Why it matters
It is the reason a Camelot code has a letter as well as a number. The number says which set of notes; the letter says whether they are arranged as major or minor. Two tracks sharing a number but not a letter share every note and still feel different, which is exactly what the diagonal move on the wheel is for.
It also explains why minor dominates. Most club music is minor because minor reads as tension and forward motion, and a floor responds to unresolved tension far more reliably than to resolution — which is a production choice you can hear across a whole catalog.
Frequently asked
What is the difference between a scale and a key?+
The scale is the set of notes; the key is that set anchored to a starting note. "A minor" names both — the minor scale, starting on A.
Why is most dance music in a minor key?+
Minor reads as tension and forward motion, and a dancefloor responds to unresolved tension. The catalog bears it out at roughly three to two.
Does the scale change how two tracks mix?+
Yes — two tracks sharing a Camelot number but not its letter share all seven notes and still feel different, which is what the diagonal move on the wheel is built to exploit.
Related terms
Musical key
The musical key is the note a track resolves to plus whether it is major or minor — A minor, F major. It is the same information a Camelot code carries, written the way a musician would write it.
Mode
A mode is a scale started from a different note of the same set — Dorian, Phrygian, Mixolydian and the rest. Major and minor are two of the seven, and the other five turn up more in club music than people expect.
Relative major and minor
Relative major and minor are two keys built from the same notes — A minor and C major, for instance. On the Camelot wheel they share a number and differ only by letter, which is why moving between them always works.
Root note
The root note is the note a key is built on and the one everything else resolves toward — the A in A minor. In club music it is usually whatever the bassline keeps returning to.
Explore: Scale finder · Camelot key · Relative major and minor · All DJ terms