Rascal Flatts’ winning combination of high-gloss harmonies, guitar heroics and achingly romantic songwriting comes through once again on 2009’s Unstoppable. While their smooth vocal blend remains the focal point, Joe Don Rooney’s muscle-flexing guitar is a key element giving these tracks punch and definition. Whether embracing sadness or celebrating a day at the beach, these Rascals remain at the top of their game.