The “Waffle House” singer said the entire experience “still feels unreal.”

Joe Jonasis living the dream.

Jonas chronicled his journey from sound check to stage inan Instagram Reel.

Mandatory Credit: Photo by Dave Hogan/Hogan Media/Shutterstock (13979713hj) Joe Jonas and Billy Joel perform on stage on Day 8 of American Express Presents BST Hyde Park on July 7, 2023 in London, United, Kingdom. (Photo by Dave Hogan/Hogan Media/Shutterstock) American Express presents BST Hyde Park, Day 8, London, UK - 07 Jul 2023

Joe Jonas and Billy Joel.Dave Hogan/Hogan Media/Shutterstock

“I’m doing something really exciting today.

Major bucket list,” he said.

But the person I sang with is incredible and made me feel very comfortable."

Jonas can be seen heading toward the stage to perform later that evening in another clip.

“The sun is officially down or about to be down.

I’m just walking to stage.

My friend is on his last song.

Can you hear it?”

He asked, putting a hand to his ear.

“And I’m about to go and join him up there.”

Sucking in air, Jonas then nervously added, “Wish me luck!”

The pair traded verses throughout the performance before singing its final chorus together to loud applause from the crowd.

After they had one more hug, Jonas thanked the audience before heading off.

In his post’s caption, Jonas wrote that joining Joel “still feels unreal.”

You’ve been a big inspiration to me and this was a bucket list moment.