Alyn Shipton celebrates the centenary of the 'Sentimental Gentleman of Swing'.
He is joined by trumpeter Zeke Zarchy and drummer Louie Bellson who look back at their time in the Dorsey band.
Meanwhile, jazz historian John Chilton assesses the trombonist's legacy, and arranger Nelson Riddle discusses the music Dorsey played.
Unforgettable hits include Dorsey's great recordings of Marie and Song of India.
Songwriter Sammy Cahn explains the unique chemistry between Dorsey and his young vocalist, and Nelson Riddle recalls writing for the pair of them.
Trumpeter Buddy Childers looks back at some roller-coaster adventures on the road with Dorsey, and there are also contributions from Zeke Zarchy, Louie Bellson and John Chilton.