Britney Jean Britney Spears
The most used Key signatures in this album are C, A, D♯, Gm, Fm, D♯m, C♯m, B, C♯, Bm, with major being the most reccurent mode.
Harmonic Profile Britney Jean
Album has 10 different key signatures, divided as follows:
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5 songs are major (out of 10).