Rap-jazz fusion artist Felonious Thelonious wowed the crowd at Heptagon Gardens last night with a dozen new blank-verse rap numbers. Fans clapped along with the catchy 15/8 beat, and there was a standing ovation for MC Squawk, the accordion player who acted as accompanist. Felonious is scheduled to bust an iamb at Krzrnski’s Cafe beginning at nine tonight.