What is multiple measure rest?

In music notation, a multiple measure rest is a symbol used to indicate a period of silence that lasts for more than one measure. It is a way to simplify notation, as it eliminates the need to write out rests for each individual measure, and it makes it easier for musicians to read the score and keep track of the timing.

Multiple measure rests are usually indicated by a single thicker line, with the number of measures indicated above the line. For example, a four-measure rest would be indicated by a thick line with the number "4" written above it.

Multiple measure rests can be used in any type of music notation, including choral scores, orchestral scores, and piano sheet music. They are a common feature in music, and they make it easier for musicians to perform complex pieces with long periods of silence.

In terms of performance, multiple measure rests require musicians to count beats and measure accurately, so they can come in at the right moment after the silence. It is also important to maintain the proper tempo during the rest, so the timing of the music remains consistent.