add further pitch helper methods for determining the frequencies of given diotonic modes (currently only with equal-tempered tuning)
add further pitch helper methods for determining the frequencies of given diotonic modes (currently only with equal-tempered tuning)

Widea/overtone,pje/overtone,brunchboy/overtone,rosejn/overtone,chunseoklee/overtone,la3lma/overtone,mcanthony/overtone,ethancrawford/overtone,craftybones/overtone