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 DavisSome day I'm gonna call me up on the phone, so when I answer, I can tell myself to shut up.
Miles DavisMaybe you play a melody twice. You play it once like you like it, and some parts that you don't like you can just switch. An eight-bar motive - you can just take it and put it in the front or back or something like that. It can save you 50 or 60 or 70,000 dollars, a drum machine. That's why everybody uses it.
Miles Davis