MusicRest

MusicRest[]
MusicRest[duration]
MusicRest[properties]

represents a period of musical silence. duration accepts the same forms as MusicDuration.

MusicRest[1/8]

The defining property is "Duration":

rest = MusicRest[MusicDuration["Quarter"]];
rest["Duration"]

Playback

Inside Sound, a rest advances the musical timeline without producing a note:

Sound[{
  MusicNote["C4", 1/4],
  MusicRest[1/4],
  MusicNote["G4", 1/2]
}]

Rests count toward the displayed event count and total duration, but do not create piano-roll rectangles.

See the Wolfram Language reference for the complete symbolic API.