Piano Sonatas nos. 2, 3, 5, & 9 Сергей Сергеевич Прокофьев
The most used Key signature in this album is C. with major being the most reccurent mode.
Harmonic Profile Piano Sonatas nos. 2, 3, 5, & 9
Album has 8 different key signatures, divided as follows:
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8 songs are major (out of 12).