By Tribune Staff ST. JOHN — Irish musician Duke Special will return to the Metropolitan Museum of Art in New York next week, but on Saturday he’ll stop in St. John for a "house gig" to raise money for the local food bank. The program will take place from 7-9 p.m. at the St. John High School Auditorium, said Linda Welch, concert organizer. A freewill donation is requested for the performance, with all proceeds going to the Send Derek to Germany fundraiser campaign for Cerebral Palsy treatments.