“Silence in cinema is as important as sound. Well-placed silence can be more terrifying than any scream.”
Alfred Hitchcock, legendary director of Psycho and Vertigo, master of suspense.
For more than 30 years, I’ve shaped sound for thriller horror films with one goal: to make the invisible unforgettable.
I don’t just mix or edit — I uncover emotion through every breath, every echo, every pause.
In the world of storytelling, sound is where truth often hides — and I listen for it.
Walder Martinez
THRILLER / HORROR
Title: El Inquilino / The Tenant
Director: Luis Perez
Country: Spain
Year: 2023
My role: Composer & Full Audio Post-Production
El Inquilino
Thriller / Horror - Spain - 2023
Jaime Figueroa travels to the Canary Islands to hold a series of conferences on
computer software. He rents an apartment that is very cheap, central, and has
some other inconveniences.
Title: Absence of Innocence
Director: Legend
Country: USA
Year: 2022
My role: Full Audio Post-Production
Absence of Innocence
Drama / Thriller - USA - 2022
Torris is used to having things his way. When he meets Drew her lack of interest in him piques his interest in her. Refusing to take no for an answer, Torris' growing obsession with Drew leads him down a path which leads to tragedy.
Title: Omission
Director: Legend
Country: USA
Year: 2023
My role: Full Audio Post-Production
Omission
Drama / Thriller - USA - 2023
A female escort starts a relationship with a married man. He does not disclose
that he's married, and she does not disclose that she's an escort setting the stage for conflict, pain, and remorse.
Title: Sins of DavidDirector: Johnick Petry
Country: USA
Year: 2023
My role: Full Audio Post-Production
Sins of David
Thriller - USA - 2025
Like all men, David Monroe has a vice. When he sees Kamara, the wife of his top executive and most loyal employee, David has to have her at all costs. David’s attempt to save his nephew’s life and also cover his own sins ends in a
murderous triangle.
Title: City Boy
Director: Legend
Country: USA
Year: 2023
My role: Full Audio Post-Production
City Boy
Policial Thriller - USA - 2023
A talented young music artist is presented with a life-changing opportunity. As he attempts to take steps toward his future, inner-city trappings and his past are holding him back. Will he be strong enough to make it out?
Title: 開始 C omienzo
Director: Fran Bueno / Luis Perez
Country: Spain
Year: 2022
My role: Composer & Full Audio Post-Production
開始 Comienzo
Thriller - Spain - 2022
"When you grow up, you'll do important things," his mother told him.
Thirty years later, Daniel Lago receives a call that will change the destiny of the world.
Title: Summer's Nightmare
Director: Eric Gambini
Country: Canada
Year: 2025
My role: Composer & Full Audio Post-Production
Summer's Nightmare
Thriller / Horror - Canada - 2025
Starring Alexia Fast (Mission: Impossible) and Drew Henderson (The Flash), this horror short is written and directed by Eric Gambini, a visual effects expert with credits such as: Gravity, The Hunger Games, Avatar, Star Trek Discovery, Aquaman and many other world-renowned titles.
Title: Proyecto Lazaro / Lazaro Project
Director: Luis Perez
Country: Spain
Year: 2024
My role: Composer & Full Audio Post-Production
Proyecto Lazaro
Psychological Thriller - Spain - 2024
Diego is going through one of the most difficult times of his life. His relationship with Maria is on the verge of collapse, his job is a constant source of stress and the pressure builds up with each passing day. In the midst of this crisis, he receives an unexpected call from his father, who disappeared 15 years ago without explanation.
Title: Quien a Hierro Mata / Who Lives by the Sword
Director: Luis Perez
Country: Spain
Year: 2023
My role: Composer & Full Audio Post-Production
Title: The Cycle
Director: Vilma Jackson
Country: USA
Year: 2023
My role: Composer & Full Audio Post-Production
The Cycle
Thriller - USA - 2023
A Black Deaf woman who is caught up in domestic violence and lost in
translation. But should this be taken at face value? She's lonely. In fact, abused
and trapped in silence by her abuser. The trauma she experiences from the
abuse means she is unable to live a normal life. Until one day she builds up the
courage and grabs an opportunity. Police officers arrive at her house. Will she be heard? Will the police protect her? Or will she be another statistic? Things do not turn out the way she expected.
Title: El Elegido / The Chosen One
Director: Sam Garcia
Country: Spain
Year: 2022
My role: Composer & Full Audio Post-Production
El Elegido
Thriller - Spain - 2022
Camila is a mother with a complicated personal life. After her husband abandons her and her daughter, Camila finds herself in an extreme situation in which there is only one option to save her daughter from a deadly disease.
And you would do anything for someone you love?
English 
Spanish