There was double reason for celebration at An Droichead – South Belfast’s primary centre of Irish language and culture. Firstly, there had been the launch earlier that day of the Belfast Traditional Music Trail. This initiative, to be held every Saturday afternoon, presents traditional Irish music to all-comers, on a trail that traverses the Cathedral Quarter – taking in some of the city’s most iconic pubs. Then, just a few hours later, a full house at An Droichead welcomed fiddler Caoimhín Ó Raghallaigh   and concertina player Cormac Begley – two of the finest exponents of their respective instruments in Ireland…