Jimmy Fallon performing with a local New York band at Bar on St. Patrick’s day

Jimmy Fallon Leave the Big Apple for St. St. Patrick’s Day and ventured to the suburbs for some partying at a small town bar…hit a local watering hole, and got caught up with the band!

The Tonight Show host found his way to Iron Smoke Distillery Friday in Fairport, New York — just outside of Rochester. He really knows the owner of the bar across the street – Mulconry’s Irish Pub – and apparently he’s heard musicians from 1916…

We’re told that Jimmy appeared at the end of the 1916 set and was asked if he could play with them before they went out. Of course, they were forced to – stick to a few more songs. As many people know, JF is a musician himself…and a natural-born showman.

This was instrumental to the three tunes they played on – including the Doors’ “Gloria”, “Keep Your Hands to Yourself” by the Georgia Satellites and U2’s “Desire”. Jimmy took over on vocals and on lead guitar… and all the other band members supported him.

After we hit the stage, he told us Jimmy hung out a bit and took pictures with the patrons… apparently he wanted his vacation to be a little more low key and homegrown…and he sure got that with the Iron Smoke crowd that night.

We’ll see if he has more to cook up about his night out on Monday… when he gets back up late at night, with his own band. This is just a good reminder – maybe a dude could just jump in at any moment and catch himself.