Perhaps the only thing harder than defending Courtney Love is being a Dave Mustaine apologist. After being famously ejected from the original Metallica line-up, the curmudgeonly guitarist and vocalist went on to make some truly progressive, intelligent records with his own influential speed metal/thrash outfit, Megadeth. However, much like Love, Mustaine is often his own worst enemy, starting and resolving feuds with his peers faster than a Gossip Girl episode arc, and generally facilitating the notion that calling him a diva isn’t much of a stretch. The caveats for this signing event for his new autobiography, Mustaine: A Heavy Metal Memoir, don’t help much: “Dave will sign books only. He will not sign memorabilia. Dave will not be personalizing books. No posed photos.” Sheesh, Dave, why bother? Skip the clown convention and save your time and money for the live show at WaMu Theater later tonight. HANNAH LEVIN

Fri., Sept. 3, 12:30 p.m., 2010