There are several music projects named Hey.
1) Poland's popular music act of the 1990s. The band was founded in Szczecin, Poland in 1992 by guitarist Piotr Banach and charismatic lead singer Kasia Nosowska.
Although Hey sometimes described themselves as Poland's first grunge band, their melodic, guitar-driven rock and eclectic appearance owed more to new wave and heavy metal influences; their first three albums contained songs in both Polish and English. During the band's mid-1990s heyday, they sold out stadiums throughout Poland, and attempted to break into the English-language market with a series of concerts overseas and an English version of their 1995 album. When this failed to arouse interest, the band began to write in Polish only, and gradually adopted a harder-edged, more industrial-influenced sound.
2) A Korean female singer who had a hit called "Je t'aime", recorded in both Korean and French.
3) Only German project of heyrec label (see [[http://heyrec.org]]) is represented at Last.fm with its tune of "Hey - Sans Toi".