Walker McGuire have spent years honing their live show, perfecting their catalog of original songs and selecting the very best covers. So we told them to forget all that and hum a bunch of deliciously cheesy rock and country hits.

The results were surprisingly fantastic. While Johnny McGuire's hummed version of Johnny Cash's "Ring of Fire" didn't do much for his bandmate Jordan Walker, the taller of the two guessed "Truck Yeah" and "Stand By Your Man" easy enough.

On the flip side, Walker had to hum "Chattahoochee" and "Don't Stop Believin'" by Journey. The game requires patience, a great knowledge of musical genres and willingness to be a little silly.

"Til Tomorrow" is also one of the songs Walker McGuire hum. That's the duo's new single, a heartbreaker written to help men and women everywhere get through a breakup. Their debut single is on the radio now, which is a little strange but totally awesome for two men who have worked hard for it. During an interview with Taste of Country, they recalled the strangest place they've ever heard their song. For Walker, it's in his Texas hometown with all his friends around. The moment was both awesome and embarrassing.

Watch Rascal Flatts Play the Hum Off!