Gawd, hit a guy where it hurts. I just spent a large chunk of time searching for my Fats Waller set and can't find it? You don't have camera in my place do you?
I'll certainly consider that in my musings, but it's probably not where I'll end up.
I've been listening to a lot of music from that era and it seems like 1929-1930 is when it occurred but I was hoping for a more informed opinion than my tin ear.
I've been listening to some later 1920s early 1930s American pop music and am trying to figure out when tubas and sousaphones get dropped and double basses start getting used. I am thinking 1929-1930, but someone out here must know better than just my guess.