The Serpents EggThe fourth Dead Can Dance album, THE SERPENT'S EGG, continues the band's evolution away from tradition rock pop song structures. The tracks are instead built on sustained chords, vocal harmonizing, and brittle sounding string instruments. "Orbis de Ignis" is almost a cappella, the only music being a bell struck between verses, with the ethereal voice of Lisa Gerrard (and others) skittering over the surface. Along with the insistent tribal drumming of