One of my favourite songs as a teenag- er was by the Pet Shop Boys: 'It's a Sin'. Catchy with a driving rhythm it was perfect for the 80s dancing of which I was so fond and at which I was such a permed, shoulder-padded expert. But the lyrics were desperately sad. Maybe the irony was lost on me but even if they were ironic, lines such as 'When I look back upon my life it's ...