Filters, Oscillators & Envelopes 1967-75 Don Preston
The most used Key signatures in this album are D♯m, C♯, Em, F♯m, A♯, C♯m, Am, F♯, with minor being the most reccurent mode.
Harmonic Profile Filters, Oscillators & Envelopes 1967-75
Album has 8 different key signatures, divided as follows:
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5 songs are minor (out of 8).
