He is the lead guitarist and high octave harmony singer in the country music band Rascal Flatts.

Like future bandmate Jay DeMarcus, he also played in Chely Wright's band before Rascal Flatts.

[citation needed] Rooney frequently jammed with family member musicians Justin Speer, Tracy Conder, and Jeramy Essary (to whom he later dedicated "I'm Movin' On").

The couple was featured in the Playboy Cyber Club's celebrity photographer section, with the nude pictorial of Fallon being shot by Rooney himself.

[7] On September 9, 2021, he was arrested for and charged in Tennessee with driving under the influence after crashing his vehicle into a tree line.