Dancing in clubs isn’t necessarily the first thing that comes to mind when most people think of Belle and Sebastian , the Scottish masters of wistful melody and wry lyrical asides. So it’s a bit of a surprise to hear lead singer Stuart Murdoch, calling from his Glasgow apartment on a rainy winter evening, describe his youth as a string of late-night revels. The 46 year old singer says, “I danced all the way through the Eighties and Nineties.