Bennigan’s Bar in Derry serves as the perfect venue for an intimate gig and that was just what Belfast born balladeer, Duke Special, was set to do on Friday night. Although the crowd was set-up to expect a totally warm and soft intimacy from the very start with a toned down piano and voice rendition of Duke’s ‘Freewheel’, there was a quick shift between atmosphere when his hand slamming on the keys brought the Bertolt Brecht cover of ‘Alabama Song’ forcefully to the ears of the audience. No one seemed to be taken aback as I was. Being one of…