ZOO was a popular Japanese pop music band from the early 1990s. They had one major hit with the song Choo Choo TRAIN. After disbanding in 1996, a former member, Hiroyuki Igarashi, started a band called J-Soul Brothers, which was later renamed to EXILE, which in turn re-made the song Choo Choo Train and quickly became it's biggest hit.
Zoo was a Norwegian band mainly active in the late 1970's and early 1980's, though originally founded in 1966. The band consisted of Ketil Stokkan (guitars, vocals), Sverri Dahl (keyboards, vocals), Erling Andersen (bass guitar, vocals), Rudi Høyness (drums, vocals) and Trond Nyrud (flutes, saxophones). They rose to national success with the singles "Evig Ung" (Forever Young, 1980) and "Vent, Ikkje Legg På" (Wait, Don't Hang Up, 1981).