There are multiple artists called "Zenith".
1) from Newcastle Upon tyne, England
2) Metal band from Copenhagen, Denmark
3) Indie/Rock band from Blackpool, UK
4) Hard Rock band from Belgrade, Serbia
5) Hard Rock band from around the Nottingham area, England
6) Ambient electronica duo of Tetsu Inoue (of Datacide, HAT, Shades of Orion, 2350 Broadway) and Carlos Vivanco.
7) Is the alias of Federico Franchi who produced hardcore/gabber as Zenith in the late 90's. Read more on Last.fm