Watch Maren Morris sing a National Anthem duet with Stephen Colbert

Scott Kowalczyk/CBS

Maren Morris' Grammy-winning talent and Stephen Colbert's tireless dedication made them the perfect pair of collaborators on the latest episode. The Late Show. Midway through the interview, Morris and Colbert launched into a duet called „The Star-Spangled Banner,” with the singer sharing stories about the weird places she grew up in, like amateur wrestling matches in high school.

With years of experience under his belt, Morris stepped in as a vocal coach for Colbert, who admitted: „I know the bassline, I don't know the melody.” Her first piece of advice for patrons is to start small. “That's the rule. „If you start too high, you'll forget that by the end of 'Rocket's Red Glare,' you have to go really high,” he warned. Colbert took the cues to heart and delivered an unexpectedly impressive performance — even Morris looked surprised at some points.

„I'd love to sing it with you at an amateur wrestling match,” Colbert told Morris as he finished the song, dreaming up ways to take the new couple on the road. The musician, understandably, no longer frequents those events. She was 15 years old and was paid $100 to sing for a minute and a half every weekend. „I had a lot of fun,” he said. „It's a fun way to make money and be patriotic.”

Morris will go on a solo tour later this year that will serve as Colbert's request to sing the national anthem with him. Her upcoming RSVP Redux tour, which kicks off at the end of May, will allow fans in each city to choose which playlist she will perform at their show.