Mixing & Mastering Engineers, Producers & Songwriters who worked with Mandreina
My name is Juan Sierra and I'm a Recording and Mixing engineer from Bogotá, Colombia. I have a BA in Music with Audio Engineering emphasis from Xavierian University and an MA of Music, Science and Technology from Stanford University. I also do audio software Development so I build unique plugins for my own Mixes.
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Grammy Nominated Mixing Engineer specializing in remote mixing all over the world. Pop, RnB, Rap, Country, Rock, Indie, EDM, Alt. Looking for amazing artists to work with.
Mixing & Mastering engineer with clients on Universal, Sony, Warner, Spinnin‘, Armada Music and Future House Music etc. +10 years of experience, signed exclusive to Universal Music,
A great mix makes a huge difference to the impact your songs have. With over 20 years experience mixing music, and hundreds of credits, I know how to make fantastic-sounding records.
I am a Music Producer for bands, artists or advertisers specializing in music transformation, editing, vocal tuning and programming. A multi instrumentalist singer/songwriter/session musician with a primary focus on bass, drums and vocals. Musical Director, bassist and singer for Above All In Volume(finalist at the Rock Hall Playoff 2015)
My skill and expertise can turn your project into professional sounding mix and master eligible for commercial use on digital platforms and radio play.
A holder of Jutronauci scholarship program, Ph.D. student, lecturer at the University of Arts in Poznan. Composer, producer, musician and intermedia creator. Worked with Universal Music Poland, Nextpop, PIAS, Adam Mickiewicz Institute, VW Commercial Vehicles and composed music for movies, animations and commercials.
I use SoundBetter to collaborate with world-class producers and musicians who help me turn intimate, folk-rooted songs into beautifully finished recordings
Musician and Producer with an eclectic taste
Recent Successes
"As for me Mike is a genius, once he caught your vibes, he will just enter your soul and make you vibrate with the way he will mix your music. this guy is just wonderful. Just try him and see, you will definitely agre..."
"Good team, good job."
"I've worked with several mix engineers but Sefi really stands out from the crowd and... will make your music better too!"
"I have no complaints with what I received from Diamond Groove Services. "
"It was a pleasure to work with Maor, we got a good sound as a result of. I can say it was clearly, just in time,responsibly, with a professional approach. Thank you."
"Very Good Engineer, Professional, On-time and willing to go the extra mile !"
"Thanks Edo! Working with you this 1st time is sure professional quality. I appreciate you for the Oomph to my tick. Im glad I can rely on your quality."
"A great musician!! %100 recommended!! :D"
"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..."
"Music has to be mixed and mastered by a professional engineer. Sefi Carmel should be your engineer of choice, no matter what your genre is. He took extra good care of my song "When A Man Loves Another" Listen for y..."
"Awesome work."
"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! "












