Two Irish guys, Ronan and Glenn, made a medley mash-up of Adele's song just days before her arrival for her Dublin show, and it was an instant internet hit. (https://www.youtube.com/watch?v=T5w3W...) Unbeknownst to both them and the thousands of fans that had joined her on that special evening (including Bono & Hozier!) she invited them on stage. Watch as the event unfolds and turned into what was the highlight of Glenn and Ronan's career so far.

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