Mixing & Mastering Engineers, Producers & Songwriters who worked with Mano de Piedra
I am a producer, mixing engineer and musician based in Galicia (Spain) who has produced a wide variety of artists from different genres like alternative rock, metal or electronic. Producing, mixing, arranging, programming or performing as a session musician.
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Hello! My name is Kyle and I am a session drummer, producer, and engineer based out of Nashville, TN.
I'm a mixing and mastering engineer based in Los Angeles, CA. This job has taken me to various parts of the world like Iceland, Mexico, Faroe Islands, Cuba and Texas. I love what I do for a living and truly enjoy discovering new music. I can't wait to start working with you!
Trained audio engineer/producer with 5+ years of experience
GRAMMY-winning engineer, mixer, producer, and multi-instrumentalist with credits including Willow Smith, Yebba, and Jon Batiste. Zach Brown blends technical precision with artistic intuition to create bold, genre-blurring sounds. He helps artists unlock their full vision, delivering music that deeply connects with listeners.
Queen of background vocals.
I specialize in vocal tuning, clean mixes and emotional dynamics. Let your song hit right — without sounding overproduced.
I have been songwriting for over 20 years, leading worship, touring as a Christian singer/songwriter, and drawing from life experience as a missionary creatively. Songwriting is a calling on my life and I believe that every story has a song!
I have over 15 years experience in pro audio and have worked on high and low budget feature films and television, top podcasts, audiobooks and nearly all genres of music.
Recent Successes
"Thank You JVH Productions for the great sound and quality on my song your mix gave the music lots of justice. Keep it Blazing"
"I've worked with several mix engineers but Sefi really stands out from the crowd and... will make your music better too!"
"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 ..."
"Eric is very professional and prompt, responding to emails quickly. His extensive experience in the industry is helpful as well."
"Many thanks to Eric! It was very easy to communicate, despite my terrible english. I got exactly what I wanted. Very fast, very easy, very neat, very professional. I'd be happy to contact him again. A true master, sur..."
"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"
"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."
"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..."
"Eric is awesome guy. He change my song to be great. I really appreciate to him. Thank you Eric. I want to work with you again!!!!"
"Matty was recommended to me and it was the best thing getting in touch with him. He has rare qualities - an amazing musican, producer, sound engineer, intuitive, responsive, interpretative and understanding. I cannot ..."
"Natalie was a pleasure to work with! Very professional and did a great job delivering excellent, clean vocals!"
"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!!! "
