Jason Derulo and Luke Bryan's virtual duet

(CNN)Please forgive us for this earworm.

We can thank the app Sing! Karaoke for pop star Jason Derulo and country star Luke Bryan teaming up for a cover of Derulo's hit song "Want to Want Me."
The amount of fun Bryan was having singing this song is almost indescribable based on his facial expressions.
The virtual karaoke scored some strong reactions from fans on social media.
It's not the first time the pair has worked together.
In 2014 they performed a mash-up of Derulo's "Talk Dirty" and the Florida Georgia Line/Bryan collaboration "This Is How We Roll" at the CMT Awards.
Derulo told People magazine he feels a kinship with Bryan as the pair both started out penning tunes for others before they became recording artists.
"I started off as a songwriter writing for other people in the industry," Derulo said. "I feel like country music is songwriters' music, so for me country music is always dope to listen to."