Since the Joan Baez show is sold out and since not everyone who reads this column is a baby boomer, here's a younger funk show to warm up your Thursday night. Sebastopol's Burnside is touring with fellow Sonoma County mamma jammas Black Sheep Brass Band for a tour that lands on the stage of The Jam tonight at 9:30 p.m. ($10). Portland players Dirty Revival fill out the bill for an evening of hip swaying.