Listen to Billy Joel on iHeartRadio

Jason Sudeikis gave an impromptu Billy Joelperformance at a Kansas concert hall on Saturday.

With pregnant fiancée Olivia Wilde reportedly looking on from the crowd, the actor joined local band Summer Breeze for a cover of Joel’s “Don’t Go Changing.”

“Thank you for indulging me,” Sudeikis said as he pumped up the crowd.

Wilde teased the event on Twitter beforehand, writing, “If you’re lucky enough to be in Kansas City tonight, go see this awesome show. Fun fun fun.”

We’re pretty sure Sudeikis, who is from Kansas, unexpectedly upped the fun quotient even more.

Check out the video below!