The Backstreet Boys and Rascal Flatts team up for a duet of “What Hurts the Most,” sending the track to No. 1 on iTunes and reviving country-pop nostalgia. TAMPA, FLORIDA - DECEMBER 16: (L-R) Howie ...

Add Yahoo as a preferred source to see more of our stories on Google. Maybe not, but they will sing a combo of BSB and Rascal Flatts hits with the two groups relying on their trademark harmonies.