It has been seven years since NBC's Broadway-centered series Smash took its final bow. But now, fans will get to hear some of the show's stunning soundtrack once again courtesy of a reunited cast.On Tuesday (May 12), it was announced that a special livestream of the 2015 live concert of Bombshell (the musical at the show's center) will air on May 20 at People.com and the magazine's social platforms.