complex compound time signature: "fraction + note"

[Ezequiel Birman]

I am using http://lsr.dsi.unimi.it/LSR/Item?id=743 to type compund time
signatures but in order to copy a score accurately, I need to be able to
write the fraction plus a note glyph.

For example:

\compoundMeter #'((5 4) (1 8)) yelds "5/4 + 1/8"

But i need "5/4 + <eight-note-glyph>"

I tried to modify the code myself but this is way beyond my skills.

-- 
Ezequiel Birman