The O'Reilly and the Paddy Hats are an Irish- folk punk - group of Gevelsberg . In 2011 the Irish folk duo The O'Reillys formed the band The O'Reillys and the Paddyhats, initially consisting of six . The band, often referred to only as Paddyhats , has played concerts at the Wacken Open Air , in Russia, Spain, France, Hungary, the Netherlands and Switzerland. History The two Gevelsberg musicians Sean and Dwight O'Reilly performed as the Irish folk duo The O'Reillys from 2009 to 2011, mainly in North Rhine-Westphalia.