The gang throws Mickey a surprise birthday party; his present is an electric organ, which Minnie plays while Mickey does a jazzy dance. Goofy bakes the cake, but keeps having trouble with it falling. The gang does a conga line to a Latin tune.
You can now watch Mickey's Birthday Party online on the following streaming providers in the United States.
| Visual Effects | Marvin Woodward | Animation |
| Visual Effects | Milt Schaffer | Animation |
| Directing | Harold Miles | Layout |
| Visual Effects | Frank Onaitis | Animation |
| Visual Effects | Les Clark | Animation |
| Visual Effects | Kenneth Muse | Animation |
| Visual Effects | Jim Moore | Animation |
| Production | Walt Disney | Producer |
| Visual Effects | Bernard Wolf | Animation |
| Directing | Riley Thomson | Director |
| Visual Effects | Riley Thomson | Animation |
| Directing | Ray DeVally | Assistant Director |
| Sound | Charles Wolcott | Music |
| Sound | George Lowerre | Sound Engineer |
