: Display time signature as single number above the staff Sometimes, when a piece of music has a frequently-changing time signature, the time signature is printed above the staff. In the following example, only the numerator

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You can use a variation of this snippet and use a dynamics context to display the time signatures, like in the following example:

version "2.18.2"

score {
<<
new Dynamics {
time 2/4 s2
time 3/4 s2.
time 4/4 s1
}
new Staff relative c' {
key es major
clef treble
<< { g'8[-3^markup { italic "sempre legato" } a b] s }
{ es,[-3pp f g <b, d>] } >>
<< { es[-2 f-1 g a <g-1 b-4> <as-2 c-5>] }
{ c,[-4 d es f] s s } >>
<< { s es[-2 f g-1 a b c d]-5 }
{ <b,-5 d>[ c d es f g-3 a b] } >>
}
>>

layout {
context {
Score
override SpacingSpanner.base-shortest-duration = #(ly:make-moment 1/32)
}
context {
Dynamics
consists "Time_signature_engraver"
override TimeSignature.style = #'single-digit
override TimeSignature.break-align-symbol = ##f
override TimeSignature.X-offset = #ly :self-alignment-interface::x-aligned-on-self
override TimeSignature.self-alignment-X = #CENTER
override TimeSignature.after-line-breaking = #shift -right-at-line-begin
}
context {
Staff
remove "Time_signature_engraver"
}
}
}

The above should render as:

If you only want to change one single Dynamics context, you can also use

[...]

new Dynamics with {
consists "Time_signature_engraver"
override TimeSignature.style = #'single-digit
override TimeSignature.break-align-symbol = ##f
override TimeSignature.X-offset = #ly:self-alignment-interface::x-aligned-on-self
override TimeSignature.self-alignment-X = #CENTER
override TimeSignature.after-line-breaking = #shift-right-at-line-begin
} {
time 2/4 s2
time 3/4 s2.
time 4/4 s1
}

[...]

And delete the stuff from layout.