John Sykes, the guitarist whose talent helped propel Whitesnake to success, is dead at 65. He also worked with the bands Thin Lizzy and Blue Murder.

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

John Sykes, guitarist with Whitesnake and Thin Lizzy who co-wrote the hit singles 'Still of the Night' and 'Is This Love,' has died. He was 65.