Roy J. Bittan (born July 2, 1949) is an American musician best known as a long-time member of Bruce Springsteen's E Street Band. Nicknamed "The Professor", Bittan joined the E Street Band in 1974. He plays the piano, organ, accordion and synthesizers. Bittan was inducted into the Rock and Roll Hall of Fame in 2014 as a member of the E Street Band.Aside from his membership in the E Street Band, Bittan has worked as a session musician for singer-songwriters and rock and pop artists.