Jack Black Surprises Jonas Brothers Fans By Hilariously Belting Out 'Peaches' From 'Super Mario Bros.'

The Jonas Brothers' Five Albums. One Night Tour wrapped in Brooklyn on Saturday night, and fans in attendance at the final show were in for a sweet surprise.

During intermission, Jack Black, who appeared in Jumanji with Nick Jonas, took the stage decked out in a Bowser costume to belt out his Super Mario Bros. Movie hit song Peaches.

Black's song from the flick saw instant success and put him on the Billboard Top 100 chart for the first time in his career.

Needless to say, the crowd lost it when Bowser took the stage and absolutely killed the piano ballad.

You can watch below.

Following his performance, Black gushed:

"I just want to say, ever since I was in the jungles of Jumanji, I've been a huge fan."

"And I am so proud to call them my friends."

Viewers of the clip were delighted by the surprise appearance.

Of course, many also acknowledged Black's undeniable talent.

A few people on social media commented that they would love to see Black perform Peaches at the Oscars next year.

And, yeah, we're totally on board with that.