she didn't know he was going to propose

Colton Jones and Dani Brillhart are partners in life and music. On YouTube and other social media platforms, the duo is known as Ni/Co. Their brilliant covers and mash-ups have the choral couple closing in on half a million followers.

In their most recent performance, Colton added something that hadn't been rehearsed... a proposal. Check out the video below to see!

* video above courtesy of Ni/Co.