With the news that the Broadway musical On Your Feet, which chronicles the life and love story of two of the world's biggest Latin popstars, is set to run at the London Coliseum next summer, we look at the couple, their careers and what we can expect from the UK premiere.The pair are two of the biggest names in Latin music with a string of hits, and have sold over 100 million records across the world, but their story has humble beginnings which saw them rise to the top of the charts and become...