Goofy's Theme - When was it first used?


Hi everyone! Continuing my daily lurking, but felt it was time to post. I'm working on another set of DVD inserts for the Walt Disney Treasures series... yup, finally getting around to The Complete Goofy.

Got a question for you, however. When was "Goofy's Theme" (audio clip here) first used? My notes thus far point to Goofy's Glider (1940), but I wanted to see if anyone knew of a different instance. Also, does this theme have an official name other than "Goofy's Theme"? :)


- Steve