Dan + Shay Knock Out Incredible Vocals and Redefine A Cappella [Photos]

'Wow' is the first word that springs to mind to describe Dan + Shay's amazing performance in Lubbock, Texas.

The strength of the vocals, the impressive surprise a capella performances (very Rascal Flatts) and even a cover of Bon Jovi's "You Give Love a Bad Name" had the crowd on their feet.

There's a line between pop and country that often becomes blurred, but when the talent is this inspiring does it really matter what you call it?

Dan + Shay were able to come through with an authentic and heartfelt voice that hit home for many. That's what so much of country music is all about. Does it ring true and reach that place in our soul that matters? If it does, then it's a home run.

Nominated for Vocal Duo of the Year by the CMAs and ACMs for the past three years running, Dan + Shay are ramping up for great things!