The Le Portrait de Petit Cossette Original Soundtrack was released on December 1, 2004. It contains eighteen tracks by Yuki Kajiura, including the main theme music "Jewel". Yuki Kajiura (梶浦 由記, Kajiura Yuki, born August 6, 1965) is a Japanese musician, composer and record producer. She has provided the music for several popular anime series.