Calling all Rude Boys and Rude Girls: This weekend The Brewery corners the market on ska music, that driving dance mix of accelerated Caribbean rhythms, horns and guitars, with a five-band Ska Summit Saturday night. Regatta 69 (pictured), home again after their European tour, chairs this summit conference, with crucial contributions by Ska delegates 40 Ozs., Riverbottom Nightmare Band, the reggae vibe of Dread 34 and promising youngsters Micah’s Hat. If you danced your ass off to The Special AKA, The Selector and The English Beat in the wayback when, if you want to see what the new next wave sounds like, or if you simply plan on moving to positive sounds on Saturday night, the show starts early, at 8 p.m. –Byron Woods