As with the previous releases from this series, Dumbo ("Spell it Out) an Open Edition release was sculpted by Bruce Lau.
The opening theme, "The Mickey Mouse March", was written by the show's primary adult host, Jimmie Dodd. It was also reprised at the end of each episode, with the slower "Now it's time to say goodbye" verse. A shorter version of the opening title was used later in the series, in syndication and on Disney Channel reruns. Dodd also wrote many other songs used in individual segments over the course of the series.
Although the show was filmed and broadcast in black and white, all of the animated segments - the opening theme, Mickey's introductions and farewells, the Jiminy Cricket shorts, etc. - were filmed in color. Below is the opening sequence (in color) courtesy of YouTube.com: