"It is incredible with how much patience and precision Martijn can work in quick succession over multiple days!"

- Willem van der Krabben , Jett Rebel

"Martijn took our band's sound to the next level, he really got involved working on our sound on a personal level.”"

- Guus van der Zijl , Lybra

"Excellent studio and great staff! Frank and Martijn were easy going and knowledgeable in the process of recording. Our band Botanic had a wonderful experience there and are excited to release our first debut album. Thanks for capturing our sound!""

- Alex M. Atzenberger , Botanic Music

Martijn de Groot is an audio engineer born in 1988 and working in audio since his Bachelor of Science in Audio in 201​0


The main emphasis of any production for Martijn is always the quality and honesty through clear communication and getting all necessary information before starting a project.

  • Fifteen years of experience as an artist.

  • Twelve years of experience in customer services.

  • Ten years of Audio Engineering.

  • Five years of experience in tutoring

Martijn knows that even the slightest detail in the creative process is just as important as the final product itself.

Our goal at Still Sound is to ensure our customer experience is as welcoming and accommodating as possible, hence we aim not only for short term but also long term relationships with our clients.

We, therefore, want to thank the companies and artists listed below for returning the same enthusiasm and collaborations we have had the chance to work with as an Audio Engineer & Producer.

Sound for Nature

Sounds for Nature is an initiative by Music Producers & Sound Engineers to help the environment by planting one tree per project.

Audio Held

Audio Held, for all your podcast needs and work.


THREE7NINE is a new international band that aims to redefine genres of music with members based in Amsterdam, Switzerland and Washington, D.C.

Klan Muzik Lab
K Events

K-Events is the largest kpop party organiser in Europe for both daytime and night time events


Skins and Hatz (Obskur) is a Utrecht based duo from The Netherlands.


Dutch Math Rock band fusing Djent, Jazz and Math Rock together into experimental diverse genre defying music. Still Sound is currently working as a producer with them since 2018.

hal5 mini square

The first and main base of Still Sound located in Amsterdam.

FMF Studio

Music Production Facility for everyone looking for a community of diverse musicians located near Rotterdam