Hardtalk speaks to a legend of the music business, a man who has written and performed some of the most memorable tracks of the last four decades. Nile Rodgers co-founded Chic, the band which defined the late '70s disco generation. From his own band Chic, to his collaborations with everyone from Madonna to Daft Punk, his beat goes on – so what is the secret to his special sound?(Photo: Nile Rodgers at the Spotify seminar, St. James's Church, Piccadilly, 2015. Credit: Ben A. Pruchnie/Getty Images)