Opening Themes

"Taiyou no Rakuen ~Promised Land~(Paradise of the Sun ~Promised Land~)" by Miyuki Kanbe

"Rainbow Notes" by Miyuki Kanbe

Ending Themes

"Daiji na Takarabako(Important Treasure Box)" by Lucia

"Sekai de Ichiban Hayaku Asa ga kuru Basho(The Place Where Morning Comes First" by Lucia, Hanon, and Rina

Mermaid Songs

"Legend of Mermaid" by Lucia, Hanon, and Rina

"Koi wa Nan Darou(Just What is Love?)" by Lucia

"Super Love Songs!" by Lucia, Hanon, and Rina

"KIZUNA(BONDS)" by Lucia, Hanon, and Rina

"Yume no Sono Saki he(To the Place After a Dream)" by Lucia, Hanon, and Rina

"Splash Dream" by Lucia

"Ever Blue" by Hanon

"Star Jewel" by Rina

"Aurora no Kaze ni Notte(Riding on the Winds of the Aurora)" by Caren

"Return to the Sea" by Sara

"KODOU ~Perfect Harmony~(HEARTBEAT ~Perfect Harmony~)" by Lucia, Hanon, Rina, and Caren (with Coco and Noel in second version)

Other

"Kuro no Kyousoukyoku ~concerto~(Concert of Darkness ~concerto~)" by the Black Beauty Sisters (Sometimes this song is also called "Voice in the Dark")