London 2012 has been anticipated by Olympic enthusiasts in Great Britain since its successful bid in 2005. Seven years of waiting and the time is finally upon us; two weeks and two days of life-changing triumphs, heart-wrenching defeats, shocks, surprises, smiles and tears. Countries across the world will be willing on the victories of home-grown talent and nations will stand united in the global togetherness of the Olympic spirit. Now, how to write a song…