Larry Campbell still remembers the voicemail he received early this spring, and from a familiar voice: “This is Bruce Springsteen . You know, I’m Patti Scialfa’s husband.” Campbell knew Springsteen’s tongue was planted firmly in cheek. The veteran guitarist’s résumé includes a seven-year stint in Bob Dylan’s band starting in 1997 and studio sessions with Dylan, Paul Simon, Levon Helm, Rosanne Cash, and just about every American music legend of the last half-century. (He’s also toured and