Islip Town Supervisor Phil Nolan has announced that the Cavaliers will perform on Thurs., Aug. 21, 7:30 p.m. at the East Islip Marina, located at the end of Bayview Avenue, south of Montauk Highway in East Islip, near the Bayview Clam Shack. The Cav­aliers perform "doo wop" harmonies from the '50s and '60s. In the event of rain, the concert, which is part of the Free Concert Series presented by the Town's Cultural Affairs Office, may be moved to the Theatre at Town Hall West, 401 Main Street in Islip. For more information, visit the Town's website at www.townofislip-ny.gov, or call the Cultural Af­fairs Office at 631- 224-5430.