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.

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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."