The reason [drummers] call things "unison", and they sound unison, is because you actually play two different tempos . . . like you're a little sharp, or a little flat; it's so slight that they call it "unison", but it's not unison.
Miles DavisSo What or Kind of Blue were done in that era, the right hour, the right day. It's over; it's on the record.
Miles DavisWhen I went in there, we used drum machine on "Time After Time" and "Human Nature".We don't use the drum machine to play a pattern. You play the pattern by being consistent.
Miles Davis