Opening Theme

"Before the Moment" by Eri Kitamura

Ending Theme

"Ai no Ondo °C(The Temperature of Love°C)" by Lucia, Hanon, and Rina

Mermaid Songs

"Mother Symphony" by Lucia

"Mizuiro no Senritsu(Aquamarine Melody)" by Hanon

"Piece of Love" by Rina "Nanatsu no Umi no Monogatari ~Pearls of Mermaid~(The Story of the Seven Seas ~Pearls of Mermaid~)" by Lucia, Hanon, and Rina

"Beautiful Wish" by Seira

"Kibou no Kaneoto ~Love goes on~(The Sound of Hope ~Love goes on~)" by Lucia, Hanon, and Rina

"Birth Of Love" by Seira

(Songs from Season 1 are used too.)

Other

"Yami no Baroque(Baroque of Darkness)" by the Black Beauty Sisters

"Ankoku no Tsubasa(Wings of Darkness)" by Lady Bat

"Hana to Chou no Serenade(Serenade of the Flowers and Butterflies)" by Lanhua

"Tsubasa wo Daite(Embraced in Wings)" by Michel

"Star Mero Mero Heart" by Alala (MeroMero refers to the feeling of being drunk.)

"Oh Yeah! Alala" by Alala

"Ashita ga Mienakute(Unable to See Tomorrow)" by Michal