This weekend’s two-MC assault begins tonight (Thursday) at Pearl Street with a tag team of Brother Ali and Immortal Technique (8:30 PM, $20, 413-586-8686). . . . Texas singer-songwriter couple Walt and Tina Mitchell Wilkins come to the Linda tonight (8 PM, $15, 465-5233). . . . English dance trio Above and Beyond (left) will play the Upstate Concert Hall tonight (9 PM, $30, 371-0012). . . . Blues guitarist Rory Block will play two sets at the Van Dyck tomorrow (Friday, 7 and 9:30 PM, $22, 348-7999). . . . The North and South Dakotas will share a Putnam Den bill with Party Boat on Friday (10 PM, free, 584-8066). . . . QE2 mainstay Syd Straw returns to the Linda on Saturday (8 PM, $18, 465-5233). . . . Zachary Cale celebrates a new record at the Half Moon on Saturday with Last Good Tooth and Alexander Turnquist (8 PM, $5). . . . None other than Weird Al will be at the Calvin Theater in Northampton, Mass., on Sunday (8 PM, $28.50-$48.50, 413-586-8686). . . . Bela Fleck brings his NY Banjo Summit to Massachussetts Sunday at the Mahaiwe (7 PM, $30-$70, 413-528-0100). . . . Maloya singer Christine Salem will perform at the Sanctuary for Independent Media on Tuesday (7 PM, $10, 272-2390).