This is your Monday night: Choose from Andrew W.K., Fester from the Addams Family, and Peter Gabriel, a confluence slightly more random than M.I.A. provoking ginger genocide last week. At Santos Party House, W.K. and friends (including Angel Deradoorian of Dirty Projectors) are uniting for the Leukemia & Lymphoma Society fundraiser, “For the Moustache You Love”; Andrew is giving a solo piano performance, naturally. Elsewhere, at Joe’s Pub, Kevin Chamberlin, a/k/a Uncle Fester in the new Addams Family musical, is fronting “Broadway Sings TV” alongside some “loopy” compadres, like the dude who played Pinocchio in Shrek the Musical. Finally, Genesis frontman Peter Gabriel, the guy responsible for that boombox scene in Say Anything, is showcasing his latest album, Scratch My Back, at Radio City Music Hall: It’s a covers album that takes on songs by Bon Iver, Magnetic Fields, and Arcade Fire, with the implication that they’ll then cover one of his songs in retaliation. Well, then.