WELCOME TO
GREGUS PRODUCTIONS
RECORDING STUDIO
STUDIO FOR PREMIUM AUDIO PRODUCTION
Forty years of studio craft. Two generations of new sound.
Gregus Productions pairs veteran engineer Cato Langnes — 40 years and over 200 recording credits — with the next generation of producers shaping what Norwegian music sounds like now. Recording, mixing, mastering, and audio restoration, based in Oslo.
Recording and mixing credits include: Njål Sparbo · Raga Rockers · Bjørn Fongaard · De Press · Famlende Forsøk
122 technical credits · 83 production credits · 40 years behind the desk
Meet the Team
Sebastian Gregus - Entrepreneur & Manager
bookings, project management, creative direction
Cato Langnes - Chief Audio Engineer
Forty years behind the desk. Cato has engineered, mixed, and produced across jazz, rock, and experimental music, with credits spanning Njål Sparbo, Raga Rockers, Bjørn Fongaard, De Press, and Famlende Forsøk. He's also our audio restoration specialist — bringing analog tape and damaged archives back to life. View full discography ↗
Julius Gregus - Producer, Artist & Violinist
Julius brings a producer's ear and a classically-trained violinist's touch to every session — equally at home writing a string arrangement or shaping a modern pop mix.
Andres Villena Campillo — Producer, Artist & Guitarist
Andres produces with a fresh, contemporary sensibility — the perfect complement to Cato's four decades of studio experience.
SERVICES
Recording
Full band sessions, solo artists, voice-over — captured with 40 years of engineering judgment. [Learn more →]
Mixing & Mastering
Balance, clarity, and punch, ready for streaming, vinyl, or CD. [Learn more →]
Audio Restoration
Reel-to-reel, cassette, and DAT tapes brought back to professional digital quality. [Learn more →]
Live Sound & Recording
On-site mixing and multi-track recording for concerts, theatre, and festivals. [Learn more →]
Follow along:
Studio sessions, restoration before/afters, and new releases — @gregusproductions on Instagram.
Follow us: Studio · Sebastian · Cato
@gregusproductions — "Recording · mixing · mastering · restoration. Oslo, Norway. 🎙️ Book: link in bio"
@sebastiangregus — "Founder, Gregus Productions. Building a studio in Oslo, one session at a time."
@catolangnes — "40 years behind the desk. Engineer @gregusproductions. Discogs: [link]"
OUR PROJECTS:
OUTSTRIDERS Podcast
Where creativity meets clarity, and vision meets action.
We believe in doing things differently—with intention, with passion, and with people at the center of it all. Every detail here reflects that mindset.