The eight men teamed up for four songs, starting with 2006's "What Hurts the Most," which the two groups just re-recorded for ...

I'm Movin' On' from their debut album won Song of the Year ... closed in 2010, Rascal Flatts moved to Big Machine for 2010's 'Nothing Like This, and 2012's 'Changed' provided a career rejuvenation.

I wasn’t allowed back in Vegas for a couple of years. I think they’ve lifted that now,” jokes bassist/singer Jay DeMarcus.