Colbie Caillat & Andy Grammer

So if Jason Mraz and John Mayer had a musical love child, it would indeed be Mr. Andy Grammer.

When the Los Angeles-bred musician hit the stage, I wasn't expecting much. Maybe it was the overwhelming amount of people smushed into a tiny area in front of an outdoor stage.....maybe it was the pain my feet were feeling from standing for three hours before he came on....or maybe it was the tall guy in front of me who was like a brick wall. You know, the kind you can't see through.

This was one of the few times I was happy to be wrong.

Andy isn't your typical performer. With a fresh-faced optimism in his face, songs, and moves, you can't help but smile. This isn't your momma's inspirational junk. This is a city boy with big dreams and apparently an even bigger voice.

Andy Grammer at Tin Roof Backstage Concert Series

And he comes Taylor Swift-approved too. After darting off the stage from an A+ performance, he dueted with the princess of pop country at Bridgestone Area. Check out the video here:

Who can follow up an opening act that rocks that hard? Colbie Caillat, of course.

She has such a cool energy and aura on stage, radiating a peace that even Bob Marley would have been jealous of. Stunning, tall as a giant, and with vocals that soothe the soul, she actually brought me to misty eyes during a couple of her heart-wrenching slow songs.

I'm pretty convinced she's the link we've been missing when pursuing world peace. How can anyone feel anything but bubbly after hearing her sing "Bubbly?"

Colbie Caillat at Tin Roof Backstage Concert Series

Studio produced, she is not. The real deal can be found here. Perfect concert pairing. Amazing evening with two very talented and bright stars.

"Keep Your Head Up" for Andy Grammer. He's going to be the next big thing.