Mixing & Mastering Engineers, Producers & Songwriters who worked with guzz oliveira
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I'm a full time musician, studio owner, sound engineer and tutor. I play mainly drums and guitar, but also snare drum, bass, mandolin, bouzouki, and some ukulele, banjo and mandola.
I recently recorded on a song featuring Miley Cyrus and have worked for Grammy winning producer Brandi Carlile. Original member of the indie folk band Birdtalker, whose music was featured on Life with John Mayer (SiriusXM). Toured with country music legend Tanya Tucker (2015-2024). Over 240 million streams across my recording career.
Producing several albums for artists and TV
I'm a customer focused mastering engineer who's passion is helping make your music become the best it can be!
Welcome to the online store of Quality Supplies LLC
High quality mix engineer with fast results and great communication!
Award-winning Mixing & Mastering Engineer with 3,000+ productions. Ranked "#1 in Mastering", "#2 in Arrangement", and "#3 in Indie Dance" at the 2026 SKIO International Remix Contest. Participated in official remix competitions for Michael Bublé, Dasha, In Color, and Fargie, with the "Dasha "Austin" Remix" officially released.
Rock/metal production expert. Mix, master, restore audio, custom tunes, podcast editing
Recent Successes
"I tried Leo on one song and he definitely came thru. I came back to him for the next song and once again he performed well. Most of all I like his people skills. It is easy to communicate with this man! "
"I worked with François Michaud at Wild Horse Studio and i liked a lot. I needed a woman singer for one song. He attended me fast, arranged the professional and recorded with high quality. I recommend! "
"I have no complaints with what I received from Diamond Groove Services. "
"Eric truly is a master at what he does. I will never use anyone else again. If you want to sound your best, look no further and hire him. He is extremely professional, talented, and incredibly easy to work with. H..."
"Reliable and "all in time making" person. Strongly recommend - Mix Master Mike."
"Alex did a great job and delivered the project on time. It sounds great! I finally got the sound I was looking for such a long time. Work with him and you won't be sorry!"
"Really enjoyed working with Ollie! Readily available and very reliable in delivering what you need!"
"Great job. Ricardo went all the way to make sure we were 100% satisfied. The end results is great!"
"Natalie was a pleasure to work with! Very professional and did a great job delivering excellent, clean vocals!"
"Very Professional had no problems making adjustments to the mix. Mike delivered me a high quality mix that sounds big and vocals are crisp and clear. I will definitely use Mike for my next project!"
"Had Graham master the tracks for my album. He was super professional, had great communication and was prompt on delivering the mastered tracks. On top of all that his work was great, took all my tracks to the next lev..."
"Just great! Great vocals, great communication, great timing, great understanding of all requests, great turnaround timing, great knowledge. Nothing else needed. Just perfect. Thank you so much, you made my track much ..."
