The theme music, composed by Joseph LoDuca, who also co-wrote the lyrics for the songs in "The Bitter Suite", was developed from the traditional Bulgarian folk song "Kaval Sviri", and was sung by "Le Mystere des Voix Bulgares". In the "Hercules: The Legendary Journeys" episode, "Unchained Heart", in which Xena is introduced, the original "Kaval Sviri" is the music used to announce Xena racing into battle.