Paul McCartney welcomed Bruce Springsteen and Steve Van Zandt onstage during his Friday night (September 15th) concert at Madison Square Garden.  McCartney introduced the pair by recalling how the sound was cut during his 2012 team-up with “The Boss” at London’s Hyde Park, in which the two legends shared a mic during “Twist And Shout.”  Springsteen and Van Zandt joined “Macca” for a runthrough of the early-Beatles standard, “I Saw Her Standing There” — with McCartney having the band play the tune a second time — presumably for additional audio and visual coverage for an upcoming live album and/or DVD.