Travis Barker is never one to shy away from a collaboration, which is probably why the Blink-182 drummer joined pop star Demi Lovato last night for a revved-up rendition of "Really Don't Care."

As Alter the Press! points out, Barker, who has worked with Willie Nelson and Damien Marley in the past in addition to remixing popular tunes by Soulja Boy and Rihanna, appeared in Lovato's music video for the song earlier this summer.

In the first clip of fan footage, the entire performance of Lovato's fourth single from her 2013 album Demi can be seen, with a short peek of Barker thrashing away around the 4:10 mark:

Fans were also able to capture Barker soloing before he exited the stage:

Lovato's ex-boyfriend Joe Jonas also made an onstage appearance at the Staples Center in Los Angeles, joining the singer for "This Is Me" from the pair's Camp Rock days in 2008. The crowd erupts with pure joy when Jonas makes his way onto the stage:

Later that night, he tweeted, "Tonight was amazing. Fun keeping this a secret."

The former Disney star has been riding high this past year following the success of Demi. Singles like "Heart Attack" and "Neon Lights" helped the album reach No. 3 on the Billboard 200 chart.

"The title of Demi Lovato's fourth LP promises a 'personal' album, and Lovato gets songwriting credits on nine songs," Rolling Stone wrote. "But make no mistake: This is industrial-strength pop, and all the better for it. The songwriters include hitmaking heavyweights like Ryan Tedder and Rami Yacoub; the choruses boom; the production has a high-gloss sheen. It's predictable stuff — sassy songs, lovelorn songs, a couple of pop-psych pep talks — but Lovato is good company, and her voice has gustiness and character."

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