Eriko Sakurai is a sound designer, composer, arranger, theremin player and bird lover, who commonly goes by the name Torine (literally Bird Sound). She began learning the piano at age 4 and the flute at age 12. She studied composition under Akinori Oosawa at Musashino Academia Musicae.

After graduating in 1999, she joined SEGA Enterprises, working in AM R&D DEPT. #1 / WOW ENTERTAINMENT / SEGA WOW on games such as SEGA Bass Fishing 2, THE HOUSE OF THE DEAD III (for which she learned the theremin in 2002) and Altered Beast. After the arcade game Ami-Gyo released in 2006, she became a freelance artist, arranging music for and playing theremin on various songs for concert halls and anime.

Torine joined NAMCO BANDAI Games (currently Bandai Namco Entertainment) in 2008, creating music for games such as Pac-Man & Galaga Dimensions, Touch My Katamari, Taiko no Tatsujin and THE IDOLM@STER.