From last.fm:

There is more than one artist going by the name Tomahawk 1. US Experimental Rock Band 2. Chinese Metal Band 3. UK Drum & Bass Producer 4. Swiss Hip Hop Artist 1. Tomahawk are an experimental alternative metal/alternative rock band from the United States. The band formed in 2000 when Fantômas, ex- Mr. Bungle and Faith No More singer Mike Patton and ex-The Jesus Lizard guitar player Duane Denison started swapping tapes with the intention of collaborating. Read more about Tomahawk on Last.fm.