Shirō Sagisu is a Japanese composer, arranger and music producer. With a career spanning over 40 years, he is best known for his works as a record producer for acts including various choir members Mike Wyzgowski, Misia, Satoshi Tomiie, and Ken Hirai. Sagisu has also worked as a film composer for several anime and films, being well known for his collaborations with Gainax, especially in the soundtrack of Hideaki Anno's series Neon Genesis Evangelion.

Neon Genesis Evangelion , also known simply as Evangelion or Eva, is a Japanese mecha anime television series produced by Gainax, animated by Tatsunoko, and directed by Hideaki Anno. It was broadcast on TV Tokyo from October 1995 to March 1996. Evangelion is set fifteen years after a worldwide cataclysm called the Second Impact, particularly in the futuristic fortified city of Tokyo-3. The protagonist is Shinji Ikari, a teenage boy recruited by his father Gendo to the mysterious organization Nerv to pilot a giant biomechanical mecha called an Evangelion and fight against beings known as Angels.