Here's the brilliant moment that Glen Hansard joins a young busker performing on Grafton Street as he sings his Oscar-winning hit Falling Slowly.
The Academy Award winning artist was spotted among the crowd by Padraig Cahill, 16, who then asked the star to join him to belt out the tune.
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Speaking about the video, Padraig told the Irish Mirror: "I was in shock for the whole song."
"It's all so amazing. It feels so good (getting so many shares online)."
The video has reached almost half a million views since it was put up and has been shared over nine thousand times.
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One person who commented on the video said: "OMG ..what an incredible voice ..well done."
Another said: "Goosebumps!! Just fabulous."
Padraig has been posting videos on Youtube and Instagram of his busking sessions for the past couple of months.
If you would like to hear more of his music you can follow him on Instagram: @padraigCahill_music.
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