For the genuine article, try Madden's Bar in Belfast City centre at weekends, especially if you have Irish. Otherwise, the Rotterdam, Cumann Chluain Ard on Sat. nights, the Hatfield Bar, Ormeau Rd., Pat's Bar in the docks, Cultúrlann Mhac Adaim / Ó Fiaich, Sat afternoons, again especially if you have Irish and amny other bars / clubs in Belfast. Check out the weekly entertainment sections of local papers. le barr measa, Annraoi. PS the Christian Brothers' Past Pupils' Union on Belfast's Antrim Road have occasional Trad nights as well.