There is more than one artist with this name:

1) Tempest is a Finnish demoscener. His real name is Janne Suni. In 2007 the Finnish Broadcasting Company reported that the American hip hop producer and rapper Timbaland had plagiarized Tempest's song "Acidjazzed Evening" for Nelly Furtado's song "Do It" without giving credit to the original composer. It is claimed that Timbaland has extensively sampled the Norwegian Glenn Rune Gallefoss' C64 cover of the song which was made with permission from Tempest.

2) Tempest is a German unsigned Death/Thrash Metal Band from Nuremburg. They were founded in the year 2005 under the Name "Anustot" with their original Drummer Simon Erlbeck, Guitarplayer Alexander Jonescu and Bassplayer and Singer Sebastian Fischer. They started covering Rock and Metalsongs from the late 70's to late 80's and found out soon that they cannot go on like that. In the year 2007 they met their new drummer drunk at a local Rockfestival and decided to kick out the old one because he severely sucked in comparison to the new one. From that one day on, in summer 2007, they started to do own songs, written by Alexander Jonescu and Sebastian Fischer, who also writes the lyrics. Their style could be described als oldschool Death Metal with Thrash influences and harsh lyrics.

3) Tempest is a mutinational group based in Northern California playing Celtic flavored rock with other world influences.

They were formed by mandolinist/vocalist Lief Sorbye. They have had many lineup changes over the years but the current lineup consists of Lief Sorbye of Oslo, Norway (double necked mandolin, mandola, vocals), Michael Mullen from Fresno, California (fiddle), Damien Gonzalez from Hollywood, California (bass), James Crocker from Dartmoor, England (guitar), and Adolfo Lazo from Havana, Cuba (drums). They regularly perform at Scottish festivals around the country and are regulars at the Philadelphia Folk Festival.

4) Tempest was a Christian glam metal band during the early 1990s.

5) Tempest is a British rock band founded by Colosseum drummer Jon Hiseman.

Original members included Paul Williams (from John Mayall & The Bluesbreakers) singing and Allan Holdsworth on guitar, plus fellow Colosseum alum Mark Clarke on bass. This lineup recorded a self-titled LP in 1972. For the second album in 1974, Holdsworth and Williams were replaced by Ollie Halsall. Shortly thereafter the band split up, with Hiseman next forming Colosseum II.

6) Tempest was a new zealand rock/metal band from the early/mid 90's, they are now called 7tongues due to copyright issues with their name.