Before the house rockin; pants dropin; earth shakin; hard rockin one & only E Street Band; Bruce Springsteen cut his early musical chops in the 60s with Steel Mill; featuring future E Street Band members Vini Lopez; the late Danny Federici & Steve Van Zandt. People already love out other Bruce Springsteen T-shirts because they are such a change from the norm; but this Steel Mill T-shirt is one for the wilful obscurists.