Tom Selznick, the most talented pianist of his generation, stopped performing in public because of his stage fright. Years after a catastrophic performance, he reappears in public in a long awaited concert in Chicago. Just moments after starting his performance in the packed theater, in front of an expectant audience, Tom finds a threatening message written on the score: 'Play one wrong note and you die'. Without leaving the piano, Tom must discover the anonymous sniper's motives and look for help without anyone realizing.
Unfortunately the movie Grand Piano is not yet available on HBO Max.
| Directing | Rodrigo Cortés | Second Unit Director |
| Production | Axel Kuschevatzky | Delegated Producer |
| Sound | Víctor Reyes | Original Music Composer |
| Writing | Damien Chazelle | Writer |
| Directing | Eugenio Mira | Director |
| Production | Rodrigo Cortés | Producer |
| Editing | José Luis Romeu | Editor |
| Production | Adrián Guerra | Producer |
| Camera | Unax Mendía | Director of Photography |
| Production | Christian Baha | Associate Producer |
| Production | Alex Corven | Line Producer |
| Production | Myles Nestel | Executive Producer |
| Production | Mikel Lejarza | Executive Producer |
| Production | Mercedes Gamero | Executive Producer |
| Production | Nicolás Tapia | Line Producer |
| Production | Lisa Wilson | Executive Producer |
| Costume & Make-Up | Txell Arfelis | Makeup Artist |
| Costume & Make-Up | Natalia Montoya | Makeup Artist |
| Sound | Michael Miller | ADR Mixer |
| Production | Joan Philo | Casting |
| Costume & Make-Up | Ana López-Puigcerver | Makeup Designer |
| Costume & Make-Up | Leire Loperena | Makeup Artist |
| Sound | Francisco Elías Toro Ramírez | Sound Editor |
| Sound | Mitch Dorf | ADR Mixer |
| Costume & Make-Up | Laura Bruy | Makeup Artist |
| Sound | Kyle D. Krajewski | ADR Recordist |
| Sound | Albert Manera | Sound Mixer |
| Art | Javier Alvariño | Production Design |
| Sound | James Muñoz | Sound Designer |
| Art | Maite Sánchez | Set Decoration |
| Production | Núria Valls | Executive Producer |
| Sound | Manuel Carrión | Foley Artist |
| Art | Jaime Anduiza | Art Direction |
| Production | Ana Isabel Velásquez | Casting |
| Costume & Make-Up | Alvaro Sanchez | Makeup Artist |
| Costume & Make-Up | Patricia Monné | Costume Designer |
| Visual Effects | Àlex Villagrasa | Visual Effects Supervisor |
| Production | César Vargas Sanz | Delegated Producer |
| Production | Gabriel Arias-Salgado | Delegated Producer |
