- All-Star Cast: Quite a list of voice actors such as Dick Van Dyke, Pearl Bailey, Jack Gilford, Cyril Ritchard, David Wayne and Hermione Gingold, just to name a few.
- Creator Backlash: Edwin Catmull and Alvy Ray Smith were not happy with the final product, prompting them to look elsewhere to develop computer graphics for animation (which they did). Sam Singer was not happy with the finished film either and was said to have his name removed from the final credits.
- Creator Killer: The movie was this for Sam Singer as he doesn't have any other credits to his name following this film, which isn't all that surprising considering the reputation he earned from his previous cartoons.
- From Entertainment to Education: The film and the original 1945 Tubby the Tuba song have both been used by music teachers in primary and secondary schools to teach students about the principles of music, musical instruments and their relationship in a symphony orchestra.
- Keep Circulating the Tapes: VHS copies of Tubby the Tuba are out of print. However a region 2 DVD was released and the movie can also be found on some video-on-demand services.
- No Budget: This movie was meant to go up against Disney in theaters, yet the production values are no different from what would air on TV at the time. Having Sam Singer attached certainly doesn't help.
- Uncredited Role: Sam Singer requested to have his name removed from the credits.
Trivia / Tubby the Tuba (1975)