Complex sentence: He is currently the lead vocalist for the alternative rock band World Fire Brigade and the current vocalist, rhythm guitarist, and lyricist of post-grunge band Fuel after being the vocalist for the original incarnation of the band from 1993 to 2006.
Split into simpler sentences: He is currently the lead vocalist for the alternative rock band World Fire Brigade and the current vocalist, rhythm guitarist, and lyricist of post-grunge band Fuel. He was Fuel's vocalist for the original incarnation of the band from 1993 to 2006.