: Lilypond finger placement brackets In music sheets intended for beginner harpists it's very common that the fingering includes not only the numbers but also brackets that indicate which fingers are positioned at the same

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version "2.19.52"
variable = {
once override TextSpanner.style = #'line
once override TextSpanner.to-barline = ##f
once override TextSpanner.bound-details =
#`(
(left
(text . ,#{ markup { draw-line #'( 0 . -.5) } #})
(Y . 0)
(padding . 0.25)
(attach-dir . -3)
)
(right
(text . ,#{ markup { draw-line #'( 0 . -.5) } #})
(Y . 0)
(padding . 0.25)
(attach-dir . 3)
)
)
}

relative c' {
key c major
time 3/4
partial 4
override Fingering.staff-padding = #'()
variable
once override TextSpanner.rotation = #'(4 1.9 0)
a'8_3startTextSpan b_2 variable once override TextSpanner.rotation = #'(-4.5 -4.5 0)
c4-1stopTextSpanstartTextSpan b-2 a_3 variable once override TextSpanner.rotation = #'(3 -0.2 0)
g_4stopTextSpanstartTextSpan a_3 b-2 variable once override TextSpanner.rotation = #'(-7 -2.5 0)
c-1stopTextSpanstartTextSpan g_2 f_3
e2_4stopTextSpan
}

It's a bit hacky, but it gets the job done.

As always, manual fiddling required to get it the way you want to look. ;)

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One possibility is to include LilyPond's fingering capabilities (-4, for instance, after a pitch) and the analysis bracket capability found at the LilyPond Snippet Repository.

version "2.19.47"

layout {
context {
Voice
consists "Horizontal_bracket_engraver"
}
}
relative c'' {
c4-1startGroup b4-2 a4-3 g4-4stopGroup |
}