Ear Candy's Official Bumbershoot Kickoff Party. High Dive, 513 N. 36th St., 632-0212. 9 p.m. $10. What better way to kick off Bumbershoot weekend than with a solid lineup drawn from all corners of the local soundscape? The Macklemore-hosted and festival-condoned kickoff event opens with the harmonic indie rock of five-piece outfit Curtains For You, followed by the bold swagger and smooth flow of unstoppably creative emcee Sol and the psychedelic cross-genre pop of Kay Kay and His Weathered Underground. At the top of the bill is the soulful bluesy rock of Thee Emergency, led by spirited frontwoman Dita Vox. Bumbershoot is all about the best Seattle has to offer, and that's exactly what this kickoff celebrates. NICK FELDMAN
Dave Mustaine Book Signing. University Book Store, 4326 University Way N.E., 634-3400. 12:30 p.m. Free. All ages. 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
Slayer & Megadeth, with Anthrax, Testament. WaMu Theater, 800 Occidental Ave. S., 381-7555. 7 p.m. $51.85. All ages. Check out Rocket Queen's chat with Slayer drummer Dave Lombardo right here.