Musicians Bono and The Edge busked in Dublin on Christmas Eve, asking people to donate to a homeless charity.
The U2 bandmembers treated gathered crowds to several songs including Christmas (Baby Please Come Home), which they performed with other musicians.
"As the buckets go around, fill them with silver, fill them with hope — the season of hope," Bono said.
Any money placed in the pair's guitar case would be given the Simon Community housing charity, they said.
The festive busking event was organised by Glen Hansard, founder of The Frames rock band, from Dublin.
Hansard and fellow Irish performer Imelda May also played at the event.