Re: "compound music expression" to "music" expression"

[Jean Abou Samra]

Le 23/04/2021 à 10:52, Gianmaria Lari a écrit :

How can I convert a "compound music _expression_" made of just *one* "music _expression_" to a music _expression_?

So something that "removes" curly brackets. 

For example it should convert 

{<a b c>} 

to 

<a b c>

Thanks, g.

If you have it at hand in Scheme:

\version "2.23.

#(define (first-element music)
   (first (ly:music-property music 'elements)))

{ #(first-element #{ { c'1 } #}) }

It would be helpful to understand your use
case; this sounds like you may not necessarily
need to unpack a sequential music _expression_.

Regards,
Jean