Slash (GUNS N' ROSES), Duff McKagan (GUNS N' ROSES), Matt Sorum (GUNS N' ROSES), Gilby Clarke (GUNS N' ROSES), Robert Trujillo (METALLICA), Charlie Benante (ANTHRAX), Scott Ian (ANTHRAX), Zakk Wylde (BLACK LABEL SOCIETY), Steve Jones (SEX PISTOLS), Steve Vai, Billy Duffy (THE CULT), Chris Jericho (FOZZY), Doug Pinnick (KING'S X), Franky Perez (APOCALYPTICA), Sebastian Bach (SKID ROW), Whitfield Crane (UGLY KID JOE), Bob Kulick (MEAT LOAF, ALICE COOPER) and Billy Idol are among the musicians who celebrated MOTÖRHEAD frontman Lemmy's 70th birthday at a private party on Sunday, December 13 at the Whisky A Go Go in West Hollywood, California.