It's received a staggering 967,281 views - and rising! - since being posted on December 9.
They've also amassed 488,804 views of their 'Hallelujah For The Homeless' promo. A heartfelt Yuletide cover of the Leonard Cohen classic, it's available now from iTunes.
"Every night people are forced to sleep on the street in dangerously low temperatures because there is no safe place for them to go," the band say. "We're known for busking on Grafton Street and have come to know many homeless people and heard their stories. In an effort to help we went busking to raise money and we'll be giving all proceeds from this song to Merchants Quay Ireland."