Biography
There are 7 bands known under this name:
1) Horizon were an Indianapolis straight edge band, who released a record called "Where The Blind Lead The Blind" on Catalyst records.
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2) Horizon were an indie/pop rock Christian band from Sydney, Australia. They had promising songs but broke up in 2008.
3) Horizon (Norway): Horizon is a soft rock band formed in 2005. their music is an alternative soft rock\funk.
Band Members:
Adrian Kristiansen: Vocal
Audun Efftevåg: Guitar
Daniel Abboud: Guitar
Daniel Heinesen: Bass
Johannes F. Alfheim: Drums
4) Horizon is also an more familiar band from USA, the soundtracks from Last.Fm is theirs.
5) Horizon is also a German Melodic Power/Prog Metal band with two albums the 2002 The Sky's The Limit and 2004's Worlds Apart
6) Horizon is a German melodic hard rock band of the 90s. Released 'Horizon'. 1992 on the Rockwerk label.
7) Horizon was also a dutch doom/death metal band.
8) Youtube user Hanyuudesu, a song writer and singer who often does covers of Vocaloid songs.
Biography text from Last.fm, available under CC BY-SA.