Revered hard rock guitarist John Sykes, best known for his work in Thin Lizzy and the multi-platinum selling glam rock outfit Whitesnake, has died at age 65

John Sykes, a veteran hard-rock guitarist who was a member of Whitesnake, Thin Lizzy and the Tygers of Pan Tang, has died, according to a post on his official Facebook page. He had battled cancer for several years;

The English guitarist co-wrote Whitesnake's 'Is This Love,' one of the defining power ballads of late-'80s hard rock.