ZOO was a popular Japanese pop music band, which was formed in 1989 and debuted with the single "Careless Dance" on 5 May 1990. They had one major hit with the song "Choo Choo TRAIN," released on 7 November 1991. In 1993 British dance music duo Band of Gypsies and singer released an album of cover versions of ZOO songs called Song of ZOO Meets House Style. After disbanding in 1995, a former member, Hiroyuki Igarashi, made the band Luv Deluxe debut in 1996, but it was soon disbanded in 1997. In 1999, he formed the band J-Soul Brothers, which was renamed Exile in 2001, which in turn re-made the song "Choo Choo Train" in 2003 and quickly became one of their biggest hits.
LUV DELUXE was a side-band formed in 1995 by CAP, SAE and HIRO. They split up in June 1997.