When the silent cinema learned to speak, the audience was surprised not only by the voices of the actors and the sound effects, but also by a new element, the music, which, combined with the dance and an unprejudiced imagination, gave rise to a new genre, as important to Hollywood cinema as the western was: the musical. A journey through the history of this genre, from its beginnings to the present day.
| Actor | Role |
|---|---|
 Damien ChazelleSelf - Director | Self - Director |
 Michel LegrandSelf - Music Composer | Self - Music Composer |
| FFanny BeuréSelf - Film Historian | Self - Film Historian |
 Patrice LeconteSelf - Director | Self - Director |
 Rob MarshallSelf - Director | Self - Director |
 Serge BrombergSelf - Producer | Self - Producer |
| PPatricia KellySelf - Gene Kelly's Wife | Self - Gene Kelly's Wife |
 Justin HurwitzSelf - Music Composer | Self - Music Composer |
 Albert WolskySelf - Costume Designer | Self - Costume Designer |
 Fred AstaireVarious Roles (archive footage) | Various Roles (archive footage) |
 Gene KellyVarious Roles (archive footage) | Various Roles (archive footage) |
 Judy GarlandVarious Roles (archive footage) | Various Roles (archive footage) |
 Catherine DeneuveVarious Roles (archive footage) | Various Roles (archive footage) |