I see sound as both an artistic expression and a physical phenomenon. My role is to bridge that gap — translating the emotion you put into your track into a final product that is technically reliable and emotionally powerful on any system.

Whether you need a single track polished or a full album brought into focus, my process adapts to the unique needs of your music.

Mixing

A great mix is its own sonic world — it might be a vast, open space where every detail breathes, or a tight, cohesive blend that feels like one powerful instrument. My mixing approach focuses on:
- Solid Foundations – Tight, controlled low-end that translates across every playback system.
- Depth and Dimension – Thoughtful use of EQ, compression, and spatial effects to place each element exactly where it belongs.
- Sonic Cohesion – Careful phase alignment and dynamic balance so all parts work together naturally, creating an effortless, impactful result.

Mastering

Mastering is the final step before your music meets the world. My approach combines technical precision with artistic sensitivity, ensuring your tracks sound consistent and engaging everywhere — from streaming platforms to vinyl. My experience as a vinyl cutting engineer means I know how to prepare music for physical formats without sacrificing its dynamic range or emotional impact.

Ready to Build Something Remarkable? Let’s bring your music to its fullest potential.

Tell me about your project and how I can help, through the 'Contact' button above.

Credits

Languages

English
German

1 Reviews

Endorse Okmog

2 years ago by Markus L.
Verified
I had the pleasure of working with Oliver Gretz for the mastering of my latest album. He was very professional and friendly throughout the whole process, and he delivered a superb mastering that exceeded my expectations. The mastering enhanced the clarity, depth and punch of my mixes, and made them sound great on any devices. The mastering was definitely worth the money, and I can highly recommend Oliver Gretz as a mastering engineer. I will come back for sure!

Interview with Okmog

Q: What type of music do you usually work on?
A: All genres.
Q: What do you bring to a song?
A: A background in physics and electronics gives me tools to solve problems and enhance beauty at a fundamental level. As a producer myself, I respect your creative vision and work to elevate it, not overwrite it. Hands-on experience in vinyl production offers insight into what makes a master translate successfully across all formats.
Q: What's your typical work process?
A: We begin with a conversation about your music, influences, and the feeling you want to convey. I apply my full expertise to deliver an initial mix or master for your feedback. Your input guides the revisions until the result is exactly what you envisioned. You receive professional-grade audio files, optimized for distribution and ready to connect with your
Q: What was your career path? How long have you been doing this?
A: I’m Oliver Gretz, also known as Okmog — a German music producer and mixing & mastering engineer. My journey bridges science and sound: from childhood piano lessons to earning a PhD in physics, I’ve always been driven by both creativity and curiosity. Along the way, I built custom Eurorack modules, VST plugins, and analog circuit prototypes, but my deepest connection lies in shaping music through mixing and mastering — bringing clarity, depth, and emotional impact to every track I work on.
Q: What's your strongest skill?
A: I see sound as both an artistic expression and a physical phenomenon. My role is to bridge that gap — translating the emotion you put into your track into a final product that is technically reliable and emotionally powerful on any system.
Q: Tell us about your studio setup.
A: The most important components in my studio are the ultra-transparent AD/DA converter Lynx Hilo, phase-linearized studio monitors HEDD Type 20, and an acoustically treated room, tuned to my ears. State-of-the-art and finest audio processing pludins and gear.

Various Artists

I was the Mastering Engineer in this production

Mastering EngineerAverage price - $90 per song
Mixing EngineerAverage price - $250 per song

Your satisfaction is my highest priority. I am committed to working with you on revisions until the final mix or master truly aligns with your vision and you are completely happy.