The Rumjacks are a Celtic-punk band with roots in Sydney, Australia, who have performed at Mighty Sounds so many times that they probably don’t even need an introduction anymore. Punk energy combined with genuine Irish folk. Violins, tin whistles, and mandolin meet sharp guitars and pub choruses. They were catapulted into the world by their hit song ‘An Irish Pub Song’. Live, they rely mainly on tempo, sing-alongs, and a properly wild mosh pit.