2/2. Alyn Shipton looks at how the career of Frank Sinatra was launched from the Dorsey band. 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 remembers some rollercoaster adventures on the road with Dorsey. Plus contributions from Zeke Zarchy, Louie Bellson and John Chilton.