A short history of movie music is presented, from silent films accompanied by a single piano, to the elaborate song scores for musicals (with scenes from MGM's musicals) and background music for dramas. Conductor/composer
| Actor | Role |
|---|---|
 Judy GarlandHerself | Herself |
| FFrank WhitbeckNarrator | Narrator |
 Busby BerkeleyHimself | Himself |
 Risë StevensHerself | Herself |
 Herbert StothartHimself | Himself |
 Bronislau KaperHimself | Himself |