There are at least two bands and one artist named Tuff.
1) a hair metal group from Arizona, USA
2) an industrial punk group from Sweden
3) an experimental hardcore techno/rhythmic noise artist from Kuopio, Finland
4) a gangsta rapper 1) Formed in Phoenix, Arizona, the band, which consisted of Jim Gillette (vocals), Jorge DeSaint (guitar), Todd Chase (bass) and Michael Lean (drums), decided to relocate to Hollywood and released a four song EP.

Read more about Tuff on Last.fm.