The Metrowest Symphony Orchestra will perform a family-friendly concert on Sunday, April 30, at 2 p.m. at the Hopkinton High School auditorium. Prior to the concert, doors will open at 1 p.m. for an Instrument Petting Zoo, featuring string instruments of all sizes, suitable for all ages. The orchestra hopes that this hands-on experience and the engaging music and amusing commentary by host Jordan Rich of WBZ talk radio will inspire a new generation of musicians. Tickets, sold at the door are $25 for adults and $10 for seniors and veterans. Children 12 and under are free.