If you're like everybody else you think there are 12 musical keys. But are there?
There are actually 30 keys. Examine this from the key signatures:
No accidentals = C major and A minor
There's two keys.
Now, let's take the keys on the 'Circle of Fourths' that provide all the flats:
One flat: that's F major and D minor
Two flats: Bb major and G minor
Three flats: Eb major and C minor
Four flats: Ab major and F minor
Five flats: Db major and Bb minor
Six flats: Gb major and Eb minor
Seven flats: Cb major and Ab minor
There's 14 more keys.
Now the keys from the 'Circle of Fifths' that provide all the sharps:
One sharp: G major and E minor
Two sharps: D major and B minor
Three sharps: A major and F# minor
Four sharps: E major and C# minor
Five sharps: B major and G# minor
Six sharps: F# major and D# minor
Seven sharps: C# major and A# minor
And, if you don't believe me, take it from Victor Wooten: