Re: advanced \tag -ing

[aliteralmind]

> Let's say I have 4 different tags: one, two, three and
> four. [...] I do need to combine them (4 scores with tags: 
one and three, one and four, two and three, two and four) 

How about this?

-------------
music = {
   \tag #'onethree \tag #'one { ... }
   \tag #'onethree \tag #'three { ... }
}
...

\score {
   \keepWithTag #'onethree \music
}
------------

There's also this scheme function for multiple tags:

http://thread.gmane.org/gmane.comp.gnu.lilypond.general
/27631/focus=27733