The Robins were a successful and influential American R&B group of the late s and s, one of the earliest such vocal groups who established the basic pattern for the doo-wop sound. They were founded by Ty Terrell, and twin brothers Billy Richards and Roy Richards. Bobby Nunn soon joined the line-up. They began their career as the Bluebirds but switched to recording as the Robins in May Genres: R&B.