Turns out...

AVERAGE.

Dustin got a C in his vocal music class.  Just goes to show you how persistence pays off, doesn't it?  Lynch said, "Talk about being told 'no' right there and wanting to prove somebody wrong."

How did he hone his voice into what we hear today?

"My voice dropped kind of early in life, and I've always kind of had a deep voice, but I've learned to sing country music just from my heroes and trying to entertain a crowd on [Nashville's] Broadway."