Études-tableaux op. 33 & 39 Сергей Рахманинов
The most used Key signatures in this album are A♯m, Gm, Am, with minor being the most reccurent mode.
Harmonic Profile Études-tableaux op. 33 & 39
Album has 14 different key signatures, divided as follows:
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11 songs are minor (out of 17).