When they are killed by the leaders of the two gangs fighting for control of the underground game, the conductor who is the heir of one of them turns his musicians into gangsters.
| Writing | Diego Santillán | Writer |
| Directing | Juan Carlos Pelliza | Director |
| Sound | Mario Cosentino | Music |
| Sound | Alejandro Saracino | Sound Director |
| Costume & Make-Up | Ernesto D'Agostino | Makeup Designer |
| Camera | Humberto Peruzzi | Director of Photography |
| Editing | Rosalino Caterbetti | Editor |
| Art | Carlos T. Dowling | Art Direction |