The E Street Band is an American rock band that has been the primary backing band for rock musician Bruce Springsteen since 1972. In 2014, the E Street Band was inducted into the Rock and Roll Hall of Fame. For the bulk of Springsteen's recording and performing career, the band included guitarists Steven Van Zandt, Nils Lofgren, and Patti Scialfa, keyboardists Danny Federici and Roy Bittan, bassist Garry Tallent, drummer Max Weinberg, and saxophonist Clarence Clemons.

A backup band or backing band is a musical ensemble that typically accompanies a single artist who is the featured performer. The situation may be a live performance or in a recording session, and the group may or may not have its own name, such as "The Heartbreakers", or "Bob Wills and his Texas Playboys" in the 1930s. Often, backup bands contain sidemen who are skilled but not known to the public; these musicians may be replaced or substituted at any time without noticeable impact on the performance.