There's a band whose several albums have made their way in my WoD games (or some Dark Age run by a friend) : Dead Can Dance. It's on the very emotional/lyrical side so it's a matter of playing this music softly. This mortal coil (another "band" produced by 4AD) has very good stuff too. Other than that I like to play Carl Orff's Carmina Burana and different pieces by Erik Satie.
Au gibet noir, manchot aimable, dansent, dansent les paladins
Les maigres paladins du diable les squelettes de Saladins.