Re: Music function help

[Aaron Hill]

On 2022-10-01 7:36 pm, Mark Probert wrote:
> I'm just starting to play more with music functions and obviously 
> haven't
> got something. I'm want to create a basic substitution-style function 
> to
> create a vocal portamento. The code I have so far doesn't work 
> correctly
> and I wonder if someone can point me in the right direction.

Is this what you were intending?

%%%%
\version "2.22"

portamento =
#(define-music-function
  (start end) (ly:music? ly:music?)
  #{
  \afterGrace { #start \glissando } #end
  #})

tune = \relative c'' {
  r2 \portamento g2 g'8 |
}

\score {
  <<
    \new Staff \tune
  >>
}
%%%%


-- Aaron Hill