Immersive sound that connects people
with stories, spaces, and themselves

From XR and mental health to museums and art - we design sound experiences that move people beyond the ordinary

Trusted by leaders in XR, healthcare, and culture

Sphere of Sound creates award-winning immersive audio for XR, mental health, museums, and art.
From subtle details to full sonic worlds, our sound design connects people with stories, spaces, and themselves.

Oorlog Dichtbij - War Up Close

An immersive audio exhibition in Groningen’s A-kerk
Winner of 2x International Sound Awards 2025
Praised as “beklemmend en confronterend” for showing that war was not only distant history,
but also stories from your own street.

VRelax

VRelax is a groundbreaking VR therapy application that helps people reduce stress, anxiety, and pain in just minutes.

What partners say

  • “Jelmer and the Sphere of Sound have consistently delivered incredible audio experiences to accompany our art in both physical spaces and digital productions."

    Micah Johnson, Artist

  • "It was fantastic to work with Jelmer. Jelmer provided our VR film with spatial audio. With his own insight, he managed to elevate the film to a higher level because he understands how VR works as an immersive media technology. Additionally, he was able to compensate for our shortcomings in visuals with audio. Jelmer is the go-to person for spatial audio."

    Michel Verspagen, Ubuntu-Media & VR Bioscoop

  • "I have had the privilege of working with Jelmer on a great range of productions for various, (often quite demanding), clients. Whether directing vocal talent to produce a pop song, or composing an intricate orchestral score, he always goes above and beyond expectations. I would highly recommend him for any production where music is key."

    Frank Oly, Oly & Reed Productions

  • "A pleasant and flexible collaboration, leading to an Immersive Audio product by Sphere of Sound, where the Ameland feeling truly comes to life."

    Jelle Westra, Amelander Museum Foundation

  • "Jelmer helped Beemup realize and bring to life our showcase. A process full of trial and error, the full immersive audio experience was impressively laid down by Jelmer. Besides a great collaboration on content, our production really got a boost. Highly recommended!"

    Alex van der Baan, YOM

  • "For me, Jelmer is a true audio and sound artist. With extreme sensitivity and a unique way of creating sound, he is an added value to my VR company VRROOM. Especially jamming and testing together with 3D sound combined with Virtual Reality makes Jelmer a great partner for us. Both in personality and professionalism a true fine audio specialist."

    Koen Toornvliet, VRROOM

  • "It's a true pleasure and honour to work with an industry expert like Jelmer"

    Clemens Amon, atmoky

I’m Jelmer Althuis, founder of Sphere of Sound. I design immersive, spatial audio for XR, mental health, museums, and art.
In the past five years I’ve created 150+ soundscapes (100+ for VRelax’s therapeutic VR library) and led award-winning installations like Oorlog Dichtbij.
2× ISA 2025 winner. My work blends art, science, and clear outcomes: calmer users, deeper presence, stories that stick.

Ready to make your story heard - and felt