## 1.4 Repeats

Repetition is a central concept in music, and multiple notations exist for repetitions. LilyPond supports the following kinds of repeats:

`volta`

  The repeated music is not written out but enclosed between repeat bar lines. If the repeat is at the beginning of a piece, a repeat bar line is only printed at the end of the repeat. Alternative endings (volte) are printed left to right with brackets. This is the standard notation for repeats with alternatives.

`unfold`

  The repeated music is fully written out, as many times as specified by `repeatcount`. This is useful when entering repetitious music.

`percent`

  These are beat or measure repeats. They look like single slashes or percent signs.

`tremolo`

  This is used to write tremolo beams.

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#### LilyPond — Notation Reference v2.18.2 (稳定分支).