Mixing & Mastering Engineers, Producers & Songwriters who worked with Bumble and Bumble
Major label artist, vocalist and producer— widely known as a finalist on NBC's The Voice and his work with Green Day and Queen.
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No pitch just real life expectancies over 40 years of recording and live mixing to my name for most of the greats in our business
Award Winner American Track Music Awards 2017, Bronze Prize Female Vocalist Global Music Award, Laurie Anderson Women in Tech Award, Netflix, Boston Globe, YOHO, Holland International Film Fest
I’ve had the privilege of contributing to projects for artists like Kacey Musgraves, Little Big Town, and Umphrey’s McGee while working alongside some of the world’s top engineers. These experiences have been invaluable, and I’m thrilled to now bring that expertise to my own work.
I'm an artist and producer based out of Asbury Park, NJ. I specialize in vocal production, and trap production.
VidZvio
I have spent thousands of hours working in the music industry, including recording, producing, writing, and playing live.
POP | INDIE | R&B | HIP-HOP | ROCK – Emotion, Clarity & Impact In Every Mix
I value a balanced mix with strong attention to detail! I find enjoyment in making each individual track of an arrangement fit together, like a puzzle piece, to show the full picture of an artists vision. I listen for clicks, pops, sound balance and sound clarity. Nothing goes unnoticed and I appreciate all genres, especially jazz, soul and hiphop.
Recent Successes
"This is the great job made by Sefi on my new song WALKING DEAD: https://www.youtube.com/watch?v=ojAWZdkO2bE You know what? I will have remix some of my previous songs too... he's so good!!! "
"If you are looking for professional MIX and MASTERING Koen Heldens will do it the best. "
"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."
"Prompt, professional, and patient. Sefi is pleasure to work with. He listens to the customer and delivers accordingly. Finally found the mastering engineer I've long searched for."
"Jack Cole did a test master for me and it sounded beautiful, definetly and new client now and it the future. He does great work"
"I enjoyed my experience working with Mike. He is courteous, timely and offers great advice. Most importantly, his work is extremely satisfactory - he pulled off the vision I had for the track very well. I highly reco..."
"I got a great mix from David. He knows how to make your song have a great sound and quality. You should try his services, you won't regret. "
"Good team, good job."
"Robert is an amazing mixer. He pays attention to details and listens to suggestions. He was extremely patient and dealt with the project in a professional manner. It was a pleasure working with him and I hope our path..."
"Eric is great to work with. He is super prompt in responding to emails, and gets the work done quickly. He worked patiently with me to get the sound I wanted and until I was sastisfied with the outcome. He is a real p..."
"Online Guitar Tracks, i.e. Lars, is a great guy to work with. Fast turnaround, dedicated, involved, very flexible, uncomplicated. Nice, clean, melodic guitar work. Not to mention that his price is a steal. Just booked..."
"I've worked with several mix engineers but Sefi really stands out from the crowd and... will make your music better too!"












