There is more than one artist with this name:
1) Nitro was formed by guitarist Michael Angelo Batio, a neo-classical/fusion shred guitarist known to be uncannily fast. Jim Gillette is the singer, known to have a very wide range in full voice. Nitro's drummer was Bobby Rock, who was also in Vinnie Vincent Invasion, Nelson, Brunette, Hardline, and a touring line-up of Slaughter.
Biography
Heavy metal outfit Nitro boasted "the fastest, loudest...

Read more about Nitro on Last.fm.