Showing Beats in Complex Music

[Laurentin Lévesque]

With my choir we're doing lots of highly syncopated music this year.  I am 
trying to rewrite my voice parts (with the lyrics) while having the beatcounts 
printed on top of the staff in their proper location with respect to the 
syncopated notes.  Could someone give me a few hints on where to look for 
starters (i.e. 'invisible' voice/staff contexts with 'visible' 1, 2, 3, 4, 
markers? or what? - the \addlyrics feature seems to complicate things a bit.)
Merci,
L