\time 3/4
\key f \major
c4
- -\tweak text "contrasting period" \startGroup
- -\tweak text "a" \startGroup
+ -\tweak HorizontalBracketText.text "contrasting period" \startGroup
+ -\tweak HorizontalBracketText.text "a" \startGroup
a8( bes c f)
f4( e d)
c d8( c bes c)