Mixing & Mastering Engineers, Producers & Songwriters who worked with Sebastian Shefferfield
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Experience your music the way you were meant to.
I produce rock, funk and blues with an aim to achieve a classic and timeless sound. Mixing and mastering for all genres - formats include Streaming, CD and Vinyl.
My name is Piotr Galiński. I'm a guitar player, bassist, vocalist and songwriter from Cracow, Poland. I'm the owner of GalTone Studio - specializing in rock, metal, pop and funk music.
Vocals arranger and guitar proffesional.
I write entire songs, do background vocals, collaborate with artist on lyrics/melodies, and create memorable hooks.
Professional Sound Engineer
Specializing in R&B, Pop, Hip-Hop, Rock, and Indie. Known for the standout hook of “Worst Enemy” (feat. Amanda Rogers) and the full track “Another Day,” I deliver genre-blending songwriting and flexible ghostwriting for rappers and producers.
Heymish Underground offers tailored soundtracks to enhance your project's vision. Whether you are an Indie Filmmaker, Game Developer, or Content Creator, Heymish creates original, emotionally satisfying tracks that make your project unforgettable.
Recent Successes
"If you are looking for professional MIX and MASTERING Koen Heldens will do it the best. "
"Totally satisfied working with Alexander...very profesional creative individual...."
"Dustin really knows how to sing, and it was a pleassure working with him! fast delivery and great quality!"
"very professional and prompt. the work was really well done."
"It was a pleasure to work with Mike. He took my song to another level! Thank you!"
"What can I say about Mike? He takes his time. But he does it for a reason. He will work with you until you are absolutely happy with your mix/master. I would highly recommend this engineer to anyone. He will take..."
"Eric is very professional and prompt, responding to emails quickly. His extensive experience in the industry is helpful as well."
"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 ..."
"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..."
"I've worked with several mix engineers but Sefi really stands out from the crowd and... will make your music better too!"
"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. ..."
"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!!!!"












