During a rainy night on their apartment, two girls hear the notes of a piano vibrating on the upper floor. One of them goes upstairs to find out where the melody comes from and faces a series of paranormal events.
| Production | Pablo Fritzler | Producer |
| Writing | Nicolás Amelio-Ortiz | Writer |
| Directing | Nicolás Amelio-Ortiz | Director |
| Art | Tomás González Montalvo | Art Direction |
| Production | Nicolás Amelio-Ortiz | Executive Producer |
| Crew | Tomás Cortés-Rosselot | Cinematography |
| Production | Tomás González Montalvo | Production Designer |
| Editing | Nicolás Amelio-Ortiz | Editor |
| Camera | Tomás Cortés-Rosselot | Director of Photography |
| Visual Effects | Franco Paesani-Rosello | Visual Effects |
| Production | Facundo Salomón | Casting |
| Lighting | Noelia de Mena | Gaffer |
| Lighting | Luz Lucarini | Electrician |
| Lighting | Jonathan Rubiano | Electrician |
| Costume & Make-Up | Agustina Iacobucci | Makeup Designer |
| Costume & Make-Up | Manuel García-Croxatto | Makeup Designer |
| Costume & Make-Up | Agustina Iacobucci | Special Effects Makeup Artist |
| Costume & Make-Up | Manuel García-Croxatto | Special Effects Makeup Artist |
| Costume & Make-Up | Jesica Genijovich | Costume Design |
| Crew | Franco Paesani-Rosello | Special Effects |
| Camera | Sofía Manzoni Vázquez | Still Photographer |
| Editing | Tomás Cortés-Rosselot | Color Grading |
| Editing | Nicolás Amelio-Ortiz | Color Grading |
| Sound | Leandro G. Giménez | Sound Recordist |
| Sound | Manuel de Andrés | Sound Mixer |