#### 3.7.6 Analysis brackets

Brackets are used in musical analysis to indicate structure in musical pieces. LilyPond supports a simple form of nested horizontal brackets. To use this, add the Horizontal_bracket_engraver to Staff context. A bracket is started with `\startGroup` and closed with `\stopGroup`

>          \score {
>            \notes \relative c'' {
>              c4\startGroup\startGroup
>              c4\stopGroup
>              c4\startGroup
>              c4\stopGroup\stopGroup
>            }
>            \paper {
>              \context {
>                \StaffContext \consists "Horizontal_bracket_engraver"
>          }}}

##### See also

Program reference: HorizontalBracket, NoteGroupingEvent.

Examples: input/regression/note-group-bracket.ly.

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