Island quartet Johnny Hoy and the Bluefish celebrates the release of their newest CD, The Dance, on Saturday, August 16, with a dock dance party at Memorial Wharf in Edgartown from 7 to 10 pm. The free harborside concerts “have proved to be very popular, and we’re doing it by popular demand,” said keyboardist Jeremy Berlin in a press release. Other band members include guitarist Buck Shank, drummer Chris Anzalone, and vocalist Johnny Hoy, who together form an extremely danceable rockabilly and blues group. For more information, visit johnnyhoyandthebluefish.com.