trill

trille (tré’-yi), F., Triller (tril’lér), G., trillo (tril’-15), I. The rapid alternation of a principal note with an auxiliary, usually the major or minor second above (a small chromatic sign being set above the note when its auxiliary is not to be diatonic). The trill begins on. the auxiliary note only when the auxiliary is written as a grace note before the principal, in this case the trill ends on the principal; normally it ends on the auxiliary. A trill is long or short (trillette (tré-yét), F., trillet’ta, trillet’to, 7.) according to the duration of the principal, the short trill sometimes amounting only to a mordent. A series of trills on different notes is a chain of trills (Triller ket’te). A mere rough rattle on one note instead of two notes crisply trilled is called goat-trill, Bocks triller, chévrotement, or trillo caprino.