As usual it is fascinating to hear these early radio programmes.
A.J. Powell and his Banjo Octet from 1942 is a real treat. This isn't the 'mass banjo' sound like the Banjoliers, but I assume from the name, 8 Banjos, and on this occasion supported by a xylophone.
There is distinctly American flavour to this broadcast, perhaps with one eye on the American GIs station in the UK in 1942. White Christmas might seem an unusual choice for October, but this song wasn't yet a standard, but newly released this month, and very popular.
Sousa's marches are well known, and a few others I knew. I especially liked Schubert's 'Marche Militaire', and as you say, Brian, the performance of 'Tiger Rag' was fantastic. I expect they used that number as the finale in their act - to rapturous applause!
I'll get around to those other ones eventually - but thank you for bringing them to us.