Some would have you believe that when young Wolfgang Amadeus Mozart entered the world, he was gabbling the overture to The Marriage of Figaro. Just the sort of aggrandising nonsense Tom Service rubbished in The Joy of Mozart (BBC Four), a – yes – joyous trawl through the life and works of the Austrian prodigy. What makes a genius? Service rejected meaningless lionisation and debunked mythologies, instead picking apart key moments in the man’s 35 years and 600-plus recorded works to justify the praise heaped upon him – while, quite understandably, swinging by a Viennese coffee house and sampling some Mozart chocolate balls.