A directive to the performer of a harp, piano, cymbal, or other struck or plucked instrument that the sound should not be damped or stopped after the initial attack, but the sound should be allowed to die away naturally. This is often indicated by the abbreviation "l.v." Let vibrate can also be indicated by a tie symbol that does not connect to another note. The tie symbol will continues out past the end of the note, indicating that the sound should continue past the indicated duration of the note. It is generally up to the discretion of the performer to determine if the sound should be damped.