 The standard embouchures for single reed woodwinds like the clarinet and saxophone are variants of the "single lip embouchure", formed by resting the reed upon the bottom lip, which rests on the teeth and is supported by the chin muscles and the buccinator muscles on the sides of the mouth.The top teeth rest on top of the mouthpiece.The manner in which the lower lip rests against the teeth differs between clarinet and saxophone embouchures.