Singer Ben Taylor joined his cousin Isaac Taylor at this weekend’s potluck at the Chilmark Community Center. Ben, the son of Carly Simon and James Taylor , played a couple of new tunes with his cousin, the son of JT’s brother Hugh and his wife, Jeannie, owners of the Outermost Inn in Aquinnah. Other performers at the potluck included Livingston Taylor , Willie Mason’s mom, Jemima James , Dukes County Love Affair, and Miguel de Braganza, owner of Boston’s Yes Oui Si Gallery.