Re: combining pieces in one book

[Jan-Peter Voigt]

> Hi David, what do you mean by assignments? I'm not a native speaker 
> and not familiar with programming. Is assignments a fix set of command?
>
> Kai
Hello Kai,
it's the assignment of a variable in lily-syntax:

--snip--
% allowed
musik = \relative c'' { bes a c b }

% not allowed
\score {
musik = \relative c'' { bes a c b }
}
--snip--

that means, that a construct [var = value] (without [])  may never be 
inside { ... } or << ... >>

You might trick that:
--snip--

parserDefine = #(define-music-function (parser location name 
mus)(symbol? not-null?)

(ly:parser-define! parser name mus)

(make-music 'SequentialMusic 'void #t))

--snip--
and then use
\parserDefine #'musik \relative c'' { c e d b }


parserDefine now is a music-function and can be used anywhere. This way 
the variable musik can be assigned and afterwords called via \musik

... but I woudn't recommend it! This might have *side-effects* and can 
lead to badly organized code!

HTH
Cheers, Jan-Peter