TubeNet

In your experience, in terms of air and fingerings which of the Sousa marches are the most difficult to play on CC tubas?

Ace

Usually I play Sousa Marches in a Marching Band on a Sousaphone (and I could probably play most from Memory), but recently we played "Washington Post" and "Stars and Stripes" in our concert band (my Concert Band horn is a CC) and the only issue I had was being mindful about reading the music and not letting muscle memory take over. I didn't think the tuba key generally matters, it's more dependent on what you're used to as a player.