Tonight on 'X Factor,' Simon Cowell's newest singing competition reality series, two country hopefuls performed onstage together. Makenna and Brock sang in perfect harmony to Zac Brown Band's 'Colder Weather' as they took the 'X Factor' stage at the audition rounds in Chicago.

Although Makenna and Brock look they could be a perfect match for each other romantically, they assured the judges they were not dating, even though it seems like Brock might be into the idea. The duo sang pitch-perfectly to Zac Brown Band's No. 1 country hit 'Colder Weather,' and the judges and audience absolutely loved their beautiful and moving duet.

Judge L.A. Reid, a legend in the music industry, swayed along during Makenna and Brock's performance and later told the duo, "You just made my day. I really enjoyed it." British singer and fellow judge Cheryl Cole said their "vocals were so controlled" and their "harmonies were spot on." Simon Cowell admitted that he's "not normally a fan of this kind of stuff," but followed this comment by saying, "I have to say your voice is sensational."

Expect to see a lot more from Makenna and Brock in the upcoming episodes on FOX's 'X Factor.' They are up to win the grand prize of a $5 million recording contract with Sony!

Listen to Makenna and Brock's Duet on 'X Factor'