Trills in modern notation are usually expressed with the abbreviation “tr” above a note on the staff. Often the abbreviation is followed by a wavy line that indicates the length of the trill.
Does Tr mean trill?
"tr" stands for trill, indicating that the note it is associated with should be rapidly alternated with the note in the scale above it (within the duration indicated). The execution of "tr" is left to the performer. If it is of some duration, it might be ended with a turn.
How do you write a trill in music?
How to Notate a Trill When Writing Music. Typically, composers notate a trill by writing the letters "tr" directly above the principle note. Sometimes the "tr" is accompanied by a wavy line. Some trill notation consists of only a squiggly line and no "tr" sign at all.