Re: Free rhythm in part of a bar

[Timothy Lanfear]

On 12/06/2020 15:26, Peter Toye wrote:
> Free rhythm in part of a bar I need to have part only of a bar notated 
> with free rhythm. Also other staves need to be synchronised. I've 
> tried using \cadenzaOn but then I get a barcheck problem and the next 
> bar goes odd. I can't see anything about this in the snippets or 
> manuals. A minimal example follows.
>
> There seem to be two issues:
>
> 1) How do I get the desired result, which is one bar with the first 2 
> crotchets synchronised with the bass, and the rest unsynchronised?
>
> 2) This isn't in the example, but what if I want a free section within 
> a bar, but synchronised accompaniment at the beginning and end of the 
> bar (e.g. a chord on the final note of a cadenza).
Maybe something like this will help. The fillbar function scales a 
semi-breve rest to the right duration to fill up the remainder of the bar.

\version "2.20.0"

fillbar =
#(define-music-function (cadenza) (ly:music?)
  (ly:music-compress #{ r1\fermata #} (ly:music-length cadenza)))

cadenza = { c'8 8 8 8 8 8 8 8 8 8 }

\score {
  <<
    \new Staff {
      \time 4/4
      c'4 4 4 4 |
      \cadenzaOn c'4 4 \cadenza \bar "|" \cadenzaOff
      R1
    }

    \new Staff {
      \time 4/4
      \clef "bass"
      c1
      4 4
      \fillbar \cadenza
      R1
    }
  >>
}


--
Timothy Lanfear, Bristol, UK.