T-Square is a Japanese jazz fusion band that was formed in 1978. They became famous in the late 70s and early 80s along with other Japanese fusion bands. Its most successful lineup included guitarist Masahiro Andoh, bassist Mitsuru Sutoh, saxophonist, flutist and EWI player Takeshi Itoh, keyboardist Hirotaka Izumi, and drummer Hiroyuki Noritake. They are known for songs such as "Truth", "Japanese Soul Brothers", "Takarajima", and "Omens of Love" among others. "Truth" was used as the theme for Japan's Formula One (F1) racing events from 1989 to 2000. An Arrangement of said tune, "Truth 21c" was used as the theme for Japan's F1 2001 and 2002, respectively, and other remixes of "Truth" were used from 2003 to 2006.