Watch: Demi Lovato joins All Time Low onstage at Sad Summer Fest

All Time Low went guest-mad at the Anaheim, California stop of their Sad Summer Fest tour over the weekend. The Baltimore pop-punk kings were joined by Heather Baron-Gracie from Pale Waves, who came on for PMA, the recent single on which she and the band collaborated.

But because doing two things is better than doing one thing, Demi Lovato also came on to sing Monsters, their duet with the band from last year’s Wake Up, Sunshine album. Check it out…

ATL frontman Alex Gaskarth and Heather recently spoke to K! about teaming up for PMA. On how the song came together, Alex explained, “This whole thing kind of happened out of the blue.”

“We’d never really linked up before, or met, apart from in passing,” he told us. “When we wrote PMA I felt like it would be cool as a duet with a female vocal on it, and I had one of those moments where I was like, ​‘I can’t think of somebody I’d rather have than Heather.’ She has such a unique and cool voice – it’s so recognisable, and that’s what really drew me into Pale Waves in the first place. Luckily, Heather was down for it.”

“As soon as Alex sent me the song I was like, ​‘Wow, this is amazing!’” Heather said. “It’s so relatable, and instantly I just knew how good it was. So I immediately agreed to be on the track. It was a case of, ​‘Get me down to the studio now!’”

Catch All Time Low, The Maine and Meet Me @ The Altar at the following UK dates very soon.

All Time Low UK tour 2021

September

22 London O2 Academy Brixton
23 London O2 Academy Brixton
26 Manchester O2 Apollo
27 Glasgow Barrowland Ballroom
28 Glasgow Barrowland Ballroom

READ THIS: All Time Low albums ranked by Alex Gaskarth