Demi Lovato teams up with Jessie J and more

‘Tis the season of the year-end mash-up (we’re lookin’ at you, Us the Duo and DJ Earworm).

But we’re taking a break from pressing repeat on those two for these videos that have caught our attention. From a surprise concert collaboration and father-son lip-sync to the R&B queen’s spotlight on domestic violence, here’s what we’re watching now.

Jessie J Teamed Up with Demi Lovato on ‘Bang Bang,’ and It’s Awesome
San Jose, California, concert-goers went insane when Jessie J welcomed Demi Lovato onstage at the 99.7 “Now Triple Ho” holiday show on Wednesday night. The former Disney star joined the Brit on “Bang Bang,” taking on Ariana Grande’s verse. So how’d Lovato hold up? Look no further than the crowd’s ovation at the one-minute mark.

“Been waiting to sing with you forever! Tonight was special,” Jessie J posted on Instagram after the show.

Lovato returned the love, Tweeting, “That just happened . Thank you SO much @JessieJ for having me on stage for Bang Bang It was an honor!”

Mary J. Blige’s Chilling Domestic Abuse-Themed Video
R&B queen Mary J. Blige released the sobering music video for “Whole Damn Year,” a raw track on her latest album The London Sessions. The beautiful black-and-white video gives those who suffer violence a face, chronicling different people who have endured domestic abuse and bullying. The lyrics (co-penned by 2013 breakout star Brit Emeli Sandé) are haunting, and the piece shows why Blige is still on top: She puts her own pain out there to help others.

Father and Son’s Car Lip-Sync Seen ‘Round the World
Georgia father-son duo Chris O’Malley and Sean, 15, pulled a Taylor Swift, getting in some bonding time with a road trip lip-sync. While the pair started off with rocking out to Guns N’ Roses, the O’Malleys switched things up to T-Swift’s ubiquitous “Shake It Off” – and the result was some serious seat-dance action.

“Rocking out to GNR is definitely macho, but it’s hard to be tough singing a T Swift song. We just rolled with it and shook it off,” Chris told Today, also exlaining why they let down their guard online.

“I think a wall is there, and just being silly and cutting loose takes those walls down and gets teens talking,” he said. “I hope this video encourages more parents to do fun stuff with their kids, and I hope teenagers can get over being cool for a minute and goof off with Mom and Dad.”