The singer claims she wanted to 'buy a gun and randomly open fire' when she saw her recent tax bill – but her gripes are as tired as the most moat-friendly Tory grandeeTax needn't be taxing, the advert simpers, and while that might be true, coughing up your hard-earned will never be anything less than grievously unpleasant. Yet hearing Adele complain about being taxed on the great tidal wave of cash generated by her multi-million selling albums, it's hard to feel much sympathy.Speaking to Q magazine, the Rolling in the Deep singer said, "I'm mortified...