Rei Harakami (レイ・ハラカミ?) (10 December 1970 – 27 July 2011) was a Kyoto-based electronic musician from Hiroshima, Japan. He composed and mixed on two Roland SC-88Pro sound generators, at times supplemented by the Roland SK-88Pro keyboard model. He suffered a fatal brain hemorrhage on 27 July 2011.
Rei released his debut album in 1998 on Sublime Records. Follow-up albums, opa*q in 1999 and red curb in 2001 showcased his skills as an artist and producer. Rei's growing reputation resulted in his becoming in demand as a producer and collaborator for artists such as UA, Great 3 and Coldcut. His recent collaboration as an artist and producer was on Akiko Yano's 2004 album, Honto no Kimochi ("True feelings"), and resulted in widespread recognition in Japan.
Rei regularly performed at some of Japan's big festivals such as Fuji Rock Festival, Rising Sun Rock Festival, and Sonar Sound Tokyo. Rei had also actively participated in several music showcases in France and Germany and in Sonar 2005 in Barcelona, Spain where he appeared with Shiro Takatani (from performance unit, "Dumb Type", as a visual collaboration).