[INSPIRATIONAL] Transposing switch on toplevel

[Simon Albrecht]

Hello everybody,

personally I increasingly feel like I kind of need these inspirational 
posts about the power of LilyPond, so here’s one of my own: I love how 
with the attached library file [ly-utility.ily], \include-d in 
[standard-include.ily], I can just add the following short lines at the 
top of my input file:

%%%%%%%%%%%%
\include "standard-include.ily"

transposer = \transpose es as \etc
\addToplevelMusicFunctions transposer
%%%%%%%%%%%%

and all the subsequent music will be transposed without the need to 
insert anything into any \score {}.

Best,
Simon

PS: Anticipating the question: I think \addToplevelMusicFunctions is in 
this form or another a candidate for openlilylib, if not even for the 
main code base.

ly-utility.ily
Description: Text document