Firstly, here's an iconic image of Booker with his sousaphone.
I'm not sure which recordings he played sousa on, since my knowledge focuses more on Duck Dunn.
Secondly, I fully recommend playing some of Duck's basslines on tuba. There's a full education for bassists in the role of the bass in a pop setting, but the lines are easily accessible as a tuba player and can be a great education if you want to work in "non-legit" settings.
https://www.instagram.com/p/BgUQSd3B1pk/" target="_blank
https://www.instagram.com/p/BgUuziShXEI/" target="_blank
https://www.instagram.com/p/BrN5uIel3lA/" target="_blank
There was an incredibly rich musical scene in Memphis throughout the entire 20th century, and the 60s really showed the world what Memphis could do. It's a very interesting and cool subject.
This is a really cool read, Bloke. Where's the rest of it?
