Overview:Film shining a spotlight on the untold story of The Sidemen, the musicians behind some of the greatest artists of all time. The Sidemen are the forgotten 'guns for hire' that changed musical history. Featuring interviews with Mick Jagger, Billy Joel and Keith Richards, this film takes viewers from the 1960s to today, via global stars such as Prince, David Bowie, The Rolling Stones and Beyoncé.