main vocal: Lucy Lawless ft Gillian Iliana Waters, "Sisters Are Doin' It for Themselves" (from the Xena episode "Lyre, Lyre, Hearts on Fire")
featured vocal: Anita Ward, "Ring My Bell"
instrumental & featured vocal: Geri Halliwell, "It's Raining Men"
Fun fact: Lucy Lawless did all her own singing for the duration of Xena: Warrior Princess. Note: Actress and singer Gillian Iliana Waters now uses her married name, Gillian White.