This weekend on The iHeartRadio Countdown with Mario Lopez Rascal Flatts guitar player Joe Don Rooney will be checking into the show! They've got a new song called 'Back To Life' climbing the charts off their new EP 'Jukebox'. Plus they're about to hit the road for a massive summer tour with Lee Brice and Billy Currington! So we'll catch up with Joe Don, play some throwback classics and of course countdown the top 20! Tune in!