The Concord Band will perform at Fruitlands Museum in Harvard on Thursdays June 17 and 24, and July 1 and 8. at 7:15 p.m. The concerts will feature three groups from a diverse mixture of ensembles: brass, saxophone, horn, and clarinet quartets, a flute choir, a woodwind quintet, the Concord Band Jazz Ensemble, a German Band, a percussion ensemble, and a wind nonet. Tickets are $10 for members of the Fruitlands Museum, $15 for non-members. Children 12 and under are free.