Just a thought: all of the Latin is sacred, is it not? In which case, you could do something like...
Sacred music in Latin
Sacred and secular music in English
The Latin divided into A–L & M–Z in order to put the masses close to the top of the right-hand column :)
Best, Philip Legge ♇ ℗ @ © Φ 09:22:49, 2006-05-24 (PDT)