and below that row is the white keys for octave 4 (z, x, c, and v). Below that row is the black keys for octave 4 (a, s, d, f, and g). Below that row is the white keys for octave 5 (q, w, e, and r). If you didn't know, the top row of your keyboard (1, 2, 3, and 4) is the black keys on the piano for octave 5 ( the root note for these keys is already set). You could use FPC to assign your chops/slices to any note on your keyboard.