T-Square (formerly known as The Square), stylized in all-uppercase T-SQUARE, is a Japanese jazz fusion band formed in 1978. They became famous in the late 1970s and early 1980s along with other Japanese jazz bands. They are known for songs such as "Truth", "Japanese Soul Brothers", "Takarajima", "Omens of Love", among others.
"Truth" has been used as the theme for Fuji Television's Formula One coverage from 1989 to 2000 and since 2012. A special arrangement, "Truth 21c", was used as the theme for Japan's F1 2001 and 2002, respectively, and other remixes were used from 2003 to 2006.