528 hz wikipedia

Piano key frequencies. sicepat wikipedia This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone equal temperament, with the 49th key, the fifth A (called A 4 ), tuned to 440 Hz (referred to as A440 ). roster evos mpl season 10 wikipedia [1] [2] Every octave is made of twelve steps called semitones