In 1990, Takemura founded Audio Sports with Yamatsuka Eye (of The Boredoms) and Aki Onda. Their first album, Era of Glittering Gas, was released in 1992 (after which Onda subsequently took control of the project), the same year as Takemura's first solo album, under the name DJ Takemura. He has also released material with Spiritual Vibes (since 1993) and as Child's View (since 1994). He is currently paired with Childisc vocalist/composer Aki Tsuyuko under the touring name of Assembler.
He founded the Lollop and Childisc labels ; his voluminous releases, remixes, and collaborations make a comprehensive discography difficult, and his music often defies any easy categorization. He emerged in the US after the release of Scope on the Thrill Jockey label in 1999, an album that features delicate melodies blossoming from oceans of white noise and staccato electronics.
His unique and complex approach to melody and instrumentation has generated a catalog of collaborations with critically acclaimed artists including Issey Miyake, Zu, Steve Reich, DJ Spooky, Yo La Tengo, and Tortoise.
Takemura was responsible for the sound design of Sony's robotic dog Aibo. In the January 2002 issue of the UK music magazine The Wire, he notes that conveying hundreds of emotions through the dog's few simple sounds was not easy :
"Usually people don't think consciously of what it's like to be angry or to cry ... humans can obviously use words to express themselves. To create the sounds of emotions was a difficult task."