What were the backup bands for Bruce Springsteen?

Bruce Springsteen has performed with several backup bands throughout his career, most notably the E Street Band, which has been his primary ensemble since the early 1970s. The E Street Band features prominent members like Clarence Clemons, Max Weinberg, and Steven Van Zandt. In addition, Springsteen has occasionally collaborated with other musicians and bands for specific projects or tours, such as the Sessions Band for his "Seeger Sessions" album.