Watch: Post Malone filmed singing an iconic Irish trad song

Post Malone is playing Longitude next month but he's already given Irish fans a bit of a treat.

The rapper's been filmed singing The Auld Triangle, a song made famous by The Dubliners.

The bizarre incident happened when Irishman Darragh O'Rourke, who's on a J1, went to a Post Malone gig in LA and ended up backstage with the man himself.

Showed up to a @postmalone concert last night without a ticket...ended up in his dressing room singing The Auld Triangle with the man himself ??‍♂️??‍♂️

A post shared by Darragh O'Rourke (@darragh_o_rourke) on Jun 22, 2018 at 2:43pm PDT

Darragh didn't even have a ticket but somehow managed to get in, hang out in the 22 year old's dressing room, and convince him to sing an Irish tune.

What's even weirder is the fact that Post knows all the words!

Cover image via @darragh_o_rourke on Instagram