A Dublin couple celebrating their marriage received an unexpected wedding gift Friday night when Amy Schumer and Judd Apatow crashed their afterparty at a local pub.

Bride Eithne McAdam and groom J.P. Swaine sat with their bridal party for a celebratory pint at Grogans Pub after their wedding -- only to be joined by Schumer, Apatow and Irish singer-songwriter Glen Hansard, the Huffington Post reports.

The trio led the newlyweds and their bridal party in a sing-along of "The Auld Triangle." Best of all? It was captured on video.

The comedian and the director, both Long Island natives, are currently in Ireland promoting their latest movie, "Trainwreck."

Tweets form guests:

@_StarGlider: "Amy Schumer is in Grogans singing with Glen Hansard at a wedding party can we just take a moment."

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@Steve_Cummins: "Who shows up for @jpswaine and Eithne's wedding only @amyschumer  Glen Hansard and Judd Apatow"

@warrenswords: "Amy Schumer, Judd Apatow and Glen Hansard are having a sing song in Grogans at the moment."