Vivid Live Lisa Hannigan Drama Theatre, Opera House, May 30 There is folk music at the root of everything that Lisa Hannigan does, but folk music is not really what she does at all. Certainly the basis of many of her melodies, the essence of some of her story telling and the basics of her instrumentation (acoustic and electric guitar, mandolin, drums – but no bass on this tour, with the kickdrum often providing as a kind of bass line) draw from long Irish and British traditio