Music extracts used for illustrative/review purposes include:
Fumblin With The Blues, The Heart of Saturday Night, Tom Waits (1974)
St Louis Blues, Live At The 1958 Monterey Jazz Festival, Louis Armstrong (1958/2007)
Spotify has removed the track we reviewed from it's listings, so here is an alternative version:
St Louis Blues, This Is Jazz Louis Armstrong Sings, Louis Armstrong (1928)
Log into the Spotify web player to hear these tracks.