Singer-songwriter Eleni Mandell is part chanteuse, part jazz vocalist and part country balladeer, with the spirit of a punk rocker and the playfulness of a Broadway performer. Her songs ping-pong from one distinct genre to another, and when she lists her musical influences, they’re appropriately all over the place. “Growing up, it was the Beach Boys, the Beatles, the Rolling Stones,” Mandell said. “Then it was X, then Tom Waits. When I discovered Tom Waits, I didn’t listen to anything else for probably 10 years.”