British Army musicians entertained unsuspecting passersby with a flashmob performance in Birmingham’s Chamberlain Square. #armyflashmob photo gallery: http://on.fb.me/18hXj13 The 60 professionals, from both Regular and Reserve bands, performed the big band classic “Sing, Sing, Sing”, by Louis Prima. The Corps of Army Music is the largest employer of professional musicians in the UK. Read more about what they do, and how to join the professionals, at http://www.army.mod.uk/music. The British Army