What vocalists were brave enough to share the studio mic with Bruce Springsteen? These four Boss songs feature some special guests on vocals.

Bruce Springsteen has been making music for more than half a century at this point, and like a lot of long-running artists, there are an almost overwhelming number of positive things that can be said about the music he’s created in all that time.

Two of rock’s biggest names — Aerosmith and Bruce Springsteen — both released their debut albums to little fanfare on Jan. 5, 1973. And although the Boston-based hard rockers’ self-titled album eventually eclipsed Springsteen’s Greetings From ...