So this song was originally written for tuba? Need to check out Phil's rendition at some point. I liked the organ version! I agree with @thecuriousfool, the sound of the organ is so beautiful and innately majestic somehow.
I miss playing the tuba. I never had my own but borrowed one in school. My last solo piece was Beelzebub by Andrea Catozzi. That was fun except my piano accompanist copped out on me at the just minute. You might like that one despite the name! Also, have you heard Tuba Tiger Rag? There's a good video on YT by Canadian Brass. It's a vintage recording