iHeartRadio Music Festival Announced (Lady Gaga, Coldplay)

iHeartRadio Music Festival, Las Vegas, NV (September 23-24, 2011) It’s being billed as the “Biggest Live Music Event in Radio History,” though I’m not exactly sure I know what that tagline means. In any event the inaugural iHeartRadio Music Festival will take place from September 23-24, 2011 at the MGM Grand in Las Vegas, NV….