A mordent is a single note trill. It is indicated by a zig-zig over a note. The trumpeter should play the indicated note, raise it one step, and then return to the first pitch and hold it.All of this takes place very quickly.

An ornament consisting of a single alternation between a given pitch, and the one immeditatly below or above it--called an inverted mordent.

Ornamentation of a melodic note by playing the melodic note and adding a single rapid note a minor second below for a lower mordent and the note a minor second above for an upper mordent.