Event planners for last night's "VH1: Save the Music" benefit were so accustomed to diva Mariah Carey's lateness that they built in an hour's delay into their schedule. As a result, the songstress arrived right just in time, joining stars like Conan O'Brien, John Mayer, James Blunt, Jon Bon Jovi, Mya, and Quincy Jones. Hillary Clinton was supposed to be there but sent her husband instead. "“Ladies and gentlemen, I’m doing tonight what I hope I’ll be doing for all of us for the next several years," Clinton told the crowd. "I’m just sort of standing here for Hillary.” Read more about what the stars said in our complete "Save the Music" Party Lines.