A profile of the late jazz musician, band leader and broadcaster Humphrey Lyttelton's 60-year career. As a jazzman, 'Humph' composed and performed Bad Penny Blues - the first jazz recording to enter the charts - and was feted by no less a figure than Louis Armstrong, who described him as Britain's top trumpeter. For more than 40 years, he hosted some of the BBC's most successful radio shows, including Radio Two's Best of Jazz and the hugely popular antidote to panel game shows, Radio 4's I'm Sorry I Haven't a Clue, in which Humph propelled the art of the double entendre to new heights. His family, friends and colleagues pay tribute to this enormously popular entertainer in a documentary featuring some unseen home movie footage, archive films of his finest performances, and interviews with regular guest panellists Graeme Garden, Tim Brooke-Taylor, Barry Cryer, Jeremy Hardy, Rob Brydon and Sandi Toksvig, as well as Humph's son Stephen.