Do As Infinity is a Japanese pop rock band. Currently consisting of 伴都美子 (Tomiko Van, vocalist) and 大渡亮 (Ryo Owatari, guitarist), several of their songs have been used as themes for Japanese television shows, movies, video games, and anime, which gained them a great amount of popularity both in Japan and worldwide.
They were formed in Tokyo in 1999, and debuted as a trio the same year with 長尾大 (Dai Nagao) as composer and leader. In 2003 their greatest hits album Do The Best achieved million sales in Japan.
The group disbanded in September 2005 and performed their last live concert at the Nippon Budokan. Each member moved onto other musical projects: Tomiko Van began a solo career; Ryo Owatari dedicated his time to the 3-piece band Missile Innovation and supporting other bands/artists on guitars; and Dai Nagao continued acting as a composer for various Avex Trax artists.
After 3 years of inactivity, the band announced their comeback on September 29, 2008 (the same day they originally began activities as a band and the same day they disbanded in 2005).