Mixing & Mastering Engineers, Producers & Songwriters who worked with Costel Biju

Radio-ready mixing & mastering, with soul and precision. We turn great songs into unforgettable records — tailored sound, punchy dynamics, and clean detail. Unlimited revisions, flexible pricing, and real human ears behind every move. Whether you’re chasing chart hits or heartfelt indie gems, we’ll treat your track like a single. Let’s make it!

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Professional Mixing and Mastering Engineer from Italy

I am a musician/producer I work in audio production editing, mixing and mastering. Tell me about your project and how I can help, through the 'Contact' button above.

If you are looking for that unique, catchy sound in Pop, Hip hop, and alternative music...I'm your answer! Currently working with labels like 300Entertainment and Caroline and the likes of Paris Shadows, Poorstacy, and Machai. I will create your next hit song from scratch or build a full masterpiece around your lyrics/vocal ideas. Hit me up!

Professional music production and mixing from an artist with 220,000+ monthly listeners and regular editorial playlist placements.

I make soulful R&B beats with house and drill fusion sometimes.. inspired by Kaytranada and Brent Faiyaz, to elevate your vocals to the next level. With 5 years of production experience, I blend 2000s Timbaland bounce with modern R&B, creating tracks that resonate on Spotify and beyond. My process is collaborative: I provide high-quality WAV stems.

Let's jam!?

Perfectionist composer and producer delivering high-quality, custom soundtracks for films and video games.