Los Angeles · Music and picture
Guillermo
Marin
Guillermo mixes records, film music and trailers, and designs and mixes sound for broadcast.
01 · Music
Hear what changes in the mix.
Five selected projects let the listener move between the original production and Guillermo’s final mix.
Selected records
Selected record work.
Mix engineering, vocal production, vocal arrangement and recording across recent releases and long-running artist collaborations.
02 · Songwriting
Songs behind the records.
Guillermo’s songwriting runs from his own 13-song album, Despertar, to recent co-writes with Bunbury and songs recorded by Sergio Dalma, Tamara, Naim Thomas, Cortés and La Barra.
The selection moves from current Bunbury collaborations to songs recorded by artists who shaped Guillermo’s early catalogue, ending with Despertar, his own authored album.
03 · Film music
Score mixing for feature films.
Guillermo’s feature-film work includes mixing Federico Jusid’s score for Life Itself.
Life Itself
Score by Federico Jusid
Score mixed by Guillermo Marin
Feature film · 2018
Selected composer relationships
Guillermo has mixed film music for Federico Jusid, Roque Baños and Arturo Cardelús.
04 · Trailers
Percy Jackson in Dolby Atmos.
The official Season 2 teaser for Percy Jackson and the Olympians was mixed by Guillermo in Dolby Atmos for Carrma, a Disney vendor.
Percy Jackson and the Olympians
Season 2 official teaser
Dolby Atmos mix by Guillermo Marin
Mixed for Carrma, a Disney vendor
05 · Broadcast
Sound design and final mix for broadcast.
Guillermo is credited as Audio Engineer on two Sports Emmy–winning FOX | FS1 technical teams. His broadcast work includes sound design and final mix for produced pieces that set up live games.
Sound design
+ final mix
Guillermo works on the pieces that play before the game and establish its story. Each one combines editorial timing, effects, atmosphere, dialogue, music and a final broadcast mix.
Awards and credit
Two Sports Emmy–winning FOX | FS1 teams.
The photograph shows the Sports Emmy alongside the Latin Grammy certificate recognising Guillermo as engineer on Bunbury’s Expectativas, a Latin Grammy-winning album for Best Rock Album in 2018.
2023
2022 FIFA World Cup
Outstanding Technical Team Studio · FOX | FS1
Audio Engineer
2026
FOX MLB: World Series — Toronto Blue Jays vs Los Angeles Dodgers
Outstanding Technical Team: Sports Event · FOX | FS1
Audio Engineer
About Guillermo.
Guillermo grew up in Spain and came to Berklee College of Music on a full-tuition SGAE scholarship. He graduated from Music Production and Engineering in 2012 and built his career in Los Angeles across records, film, trailers and broadcast.
His credits also include songwriting, music production, vocal production and arranging.
Education
SecretosDeMezcla
Guillermo founded SecretosDeMezcla, a Spanish-language online education platform for music production that has served more than 6,000 students. Its courses cover mixing, mastering, production, songwriting and related audio skills.
Start a conversation
Tell Guillermo about the project.
A track, a score, a trailer cut or a broadcast piece is enough to begin. Share the current stage, format and timing, plus a private link when one is available.
Your details will be used only to respond to this inquiry.