This would have been a cool Christmas Eve surprise to stumble upon.

Glen Hansard (Swell Season), Bono, Damien Rice, and Mundy teamed for a busking session on Dublin’s Grafton Street (the same street where Hansard’s character performs in the film Once.) They played for about an hour and raised money for homeless charity Simon Community.

Have you ever seen anyone famous busking? I saw Belle & Sebastian play an impromptu set for fans waiting in line for festival tickets in England, which was pretty cool but not exactly busking on the street or subway…