If you had to call it "unison", it ain't unison. It ain't the same as somebody else. If you can hear that it's unison, and you have to name it something other than "unison", it ain't unison, you know what I mean? It's two guys playin', but one guy is playin' slightly out of tune, one is playin' slightly off meter.
Miles DavisIf you got up on the bandstand at Minton's and couldn't play, you were not only going to be embarrassed by the people ignoring you or booing you, you might get your ass kicked.
Miles Davis