Mixing & Mastering Engineers, Producers & Songwriters who worked with Matt Marcii
Hello, I’m Zefan Music Producer, Orchestrator, and Creative Partner. With 20 years of experience in music production, I specialize in crafting emotionally rich, cinematic soundscapes that fuse contemporary Pop with orchestral depth. Since 2005, I’ve collaborated on a wide range of projects for recording artists, film, media, and live performances
Seven years of professional bass playing both in the studio and live all over the world!
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🔥 Club pop beats with rebellious energy—I create bold, glitchy, and euphoric tracks that blend Charli XCX’s futuristic chaos with Kesha’s unapologetic party anthems. If you need club-ready, radio-polished bangers, let’s make something that stands out.
The music lab and audio productions. Audio Post-Production for video, dubbing and more.
Music producer and engineer with 20 years of experience working with Mary J Blige and R. Kelly
Hi! My name is Nathan Sepulveda. I play a few instruments and I think I'm pretty good. I can write or arrange most anything you can think of too! Some of my past work has included a few short films, including an EMMY nominated one called, "Disinfection".
I am a musician and artist too. I work on all the works as it is mine.
Hi, my name is Boris, I am a professional music producer, composer and guitar player.
Professionally hear the sounds of your soul and turn them into music.
For 7 years at NYC’s Engine Room Audio, I’ve helped artists craft industry-standard records in a professional and creatively safe environment. I specialize in creating a space where both rising talent and major artists can push boundaries without pressure. That balance of top-tier quality and authentic artist development is what sets my work apart.
Recent Successes
"We have a very good experience with Long Range Mastering. They help us a lot in our sound and our general sound image. They have real understanding of the sound picture and we have a full comfort when collaborate. ..."
"I have no complaints with what I received from Diamond Groove Services. "
"Easy to work with, polite, and caught the vision of my record. This is the second engineer that I could say, knows what he is doing. God willing I will be sending him more records to mix and master for future projects."
"Very impressed with the level of professionalism and the priority on turning out great results that guarantee client satisfaction. Very pleasant to work with, friendly and attentive! Would certainly work with Alex Mor..."
"Natalie was a pleasure to work with! Very professional and did a great job delivering excellent, clean vocals!"
"I worked with Leo once. I admit the first task I gave him wasn't a small one. Especially with my budget. He did the job wonderfully. I went back to him for my album and the man did it again. He is persistent, pat..."
"Andrew works quickly and communicates well to finish your job. He sent over test masters quickly and even gave me a couple of different ones, which went a long way in my decision to hire him. He did an excellent job,..."
"Great experience. Mike took a complex song I gave him with some limited vocal performances on my part and made the song shine. He has a very good ear, a love for music, good beside manner and a very strong technical..."
"Meeting Chuck Sabo through Soundbetter is the best thing that happened to our music. The consummate professional: helpful, dependable, uncomplicated. A great drummer, but even if you don't need drums, hire him for his..."
"It was a pleasure to work with Mike. He took my song to another level! Thank you!"
"I was very satisfied with Paul. He is very trustworthy. I will work with him again!"
"highly recommended. very skilled, creative, and good attention to detail. quick turnaround. professional. "













