I know organ and keys wizard Michael Zabrek from his days way back in the ol’ FL of A, when he played in a heady Tampa Bay area jazz-funk band called Worldwide Zoo. More than a decade on, he’s settled in Seattle and has taken up with another fine band of a similar sonic persuasion, Proud & Nasty (with Adam Gross on drums, Scott Morning on trumpet, and Aaron Harmonsen on bass, plus select guests). They’ve been playing an ongoing Thursday night open jam at Sea Monster for a while now, during which attendees are invited to sign up and sit in on an improvised set. I’m told it’s a very good time. (Event-length YouTube videos confirm this.) This is a special Halloween costume party edition, and attendees are encouraged to dress up (there’s a costume contest and also a Silly String art contest?!) and come get down. by Leilani Polk