lilypond-book/(La)TeX knowledge required

[Ruud van Silfhout]

Hi TeXnicians?,

I'm (again) working on a version of a hymne book I have been working on 
before. I is written lilypond and LaTeX.
Before I have worked on a version for the people in church, now I have 
to make a special version for the church choir.
I have a TeX variable containing the number of the hymne ( \thehymneno 
). What I want is that at the top of each page, except for the first page,
the hymne number appears followed by the pagenumber (so, 
\thehymneno--\thepage).
I couldn't get this to work properly and I tried a lot. Is this 
something that is influenced by lilypond-book somehow?
So, I could do with some help.

Any suggestions?

Thanks,
Ruud