Sidemen and Sidewomen are musicians who work alongside rock stars on stage and in the recording studio. They are “mercenaries” who have to put aside their egos in order to support the stars who hire them. They play in the shadows, hiding, even if they are often the creators of a certain “sound”. “Sidemen. Mercenaries of Rock,” a documentary airing Friday, September 1 at 10:50 pm on Rai 5. Narrated by Earl Slick, assistant to David Bowie. He is someone who delves into aspects of his profession. Joy and pain. Uplifting and depressing moments. And in doing so, he introduces some of his colleagues, “mercenaries”, rock soldiers of fortune. Bernard Fowler has been with the Rolling Stones for 30 years. Jagger and his colleagues amplify his qualities by explaining the rules of the ideal accompanist, the touring musician. Billy Joel talks about Crystal Talifero, a multi-instrumentalist on stage and a college teacher. Wendy and Lisa talk about their past with the Prince and their second life. Guitarist Steve Cropper is an exception. As a sideman, he plays on tour, but is also a session musician and records in the studio with the best musicians. He is also the author of historical hits. Trumpeter Cristal “Revel” Torres performed with Beyoncé for years and then rediscovered his career with rapper Lupe Fiasco.