Complex sentence: Pitman has performed frequently with Guns N' Roses and amongside Tommy Stinson, he has been one of the longest members to remain, longer than former members Steven Adler, Izzy Stradlin, Gilby Clarke and nearly as long as Slash.
Split into simpler sentences: Pitman has performed frequently with Guns N' Roses and alongside Tommy Stinson. He has been one of the longest members to remain, longer than former members Steven Adler, Izzy Stradlin, Gilby Clarke and nearly as long as Slash.