A mouthpiece assembly for a woodwind musical instrument that holds an associated reed includes (1) an elongated mouthpiece body defining an air conduit means extending therethrough for providing a supply of air to facilitate playing of a woodwind musical instrument; (2) a reed placement surface defined on the mouthpiece body adjacent the air conduit dimensioned and configured to receive a reed detachably secured thereagainst; (3) a ligature including a ligature body dimensioned and configured to encircle the mouthpiece body and selectively retain the associated reed in position upon the reed placement surface and (4) a locating body engaging the ligature body and the mouthpiece body to locate the ligature body axially and radially with respect the mouthpiece body. The invention also includes the method for mounting a ligature on a mouthpiece for a woodwind musical instrument that includes the step of providing a locating body engaging the ligature body and the mouthpiece body to locate the ligature body axially and radially with respect the mouthpiece body.