I've been a fan of the 1951 Jack Webb film "Pete Kelley's Blues" since I first saw it in London in the 60s.

I hadn't realised there was a US radio series of the same name - also starring Webb - based loosely on the style of the film. Even better, I discovered some recordings of this series and other radio programmes at www.archive.org. Other 'Catters have probably known about this site for much longer than me but - for those that haven't - there's a wealth of freely downloadable old music, radio programmes and other stuff. All in the public domain and legally downloadable or listenable to, or so it appears.