The unlikely duo belt out Irish tune The Wild Rover in Paddy Reilly’s Music Bar

Jimmy Fallon and Post Malone went on the session this week at Irish pub Paddy Reilly’s Music Bar in New York City.

On Monday night, Post Malone (real name Austin Richard Post), and Jimmy Fallon headed to Paddy Reilly’s for a few post-work drinks after filming for Fallon's 'The Tonight Show.'

Read More: National Family History Month: Learn about Jimmy Fallon’s Irish roots

Not content to sit and sip their pints, Fallon and Posty hopped up on stage to sing renditions of some traditional Irish songs.

‘No, nay, never,’ belted Fallon and Malone with the backing of a live Irish band. With pints in hand, the two stomped along to the tune much to the delight of the pub’s patrons.

Read More: VIDEO: Post Malone plays banjo in an Irish pub

Fallon is reportedly a frequent customer at Paddy Reilly’s Music Bar in the city.

Later in the week, Paddy Reilly’s posted to Facebook thanking the two for stopping in:

‘Delighted, honored, and privileged, to have a couple of locals in the House last night. Thanks to Jimmy Fallon and Post Malone for dropping in. Such New Yorkers. #yourpintisalwayswaiting

Earlier in the year, Post Malone surprised many fans with a version of The Auld Triangle during a tour stop in Dublin, Ireland.

What Irish tune should Post Malone cover next? Share in the comments!

Post Malone and Jimmy Fallon went for some post-work drinks after filming!