The electronic duo have been on the road for their World War Joy Tour with 5 Seconds of Summer and Lennon Stella since September, and during their show at the Forum in Los Angeles Tuesday night (November 26), Andrew Taggart and Alex Pall gave fans an unexpected surprise when they brought out Mark Hoppus and Travis Barker to perform their unreleased collaboration, "PS. I Hope You're Happy." Equipped with his bass, Hoppus joined Taggart and Pall onstage while Barker, already behind his drum kit, ascended from the bowels of the stage.
Taggart and Hoppus exchanged verses during the catchy song, with The Chainsmokers singer taking the reins during the chorus. Now that the track is out in the world, could we be getting a recorded version soon? We can only hope.
For now, we can listen to "PS. I Hope You're Happy" through live video. Watch the footage below.
The Chainsmokers are currently wrapping up their World War Joy Tour. Tickets for the remaining dates are available now. Check out a list of dates below.
The Chainsmokers World War Joy Tour Dates
11/29 - San Francisco, CA @ Chase Center
12/1 - Sacramento, CA @ Golden 1 Center
12/3 - Tacoma, WA @ Tacoma Dome
12/5 - Portland, OR @ Moda Center
12/6 - Vancouver, BC @ Pepsi Live at Rogers Arena