Mixing & Mastering Engineers, Producers & Songwriters who worked with Koppo
Your sound deserves more than balance—it deserves impact. I specialize in mixing & mastering that elevates emotion, clarity, and dynamics so your track stands next to the best in the game.
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Justin Abel is a recording engineer, producer, and mixing engineer based out of Portland, OR.
Versatile expert vocalist and arranger. Worked with Stargate, Louis Bell, Rodney Jerkins and more. Sony ATV previously, now independent. Pop/urban and cinematic vocal styles.
I can compose and perform/record basslines for other musicians in the rock/pop field whether it be original songs or covers.
With 25 years of experience as a ghost producer and mixing engineer, MAD Haphor brings „with mathematical accuracy and surgical precision“ a distinctive sound to the mix.
Lyrikal Master with 21 years of music industry experience, record label owner with his own music studio with song releases on FM radio, winner of awards & global performer. Credits: Planet Asia, Kxng Crooked. Current projects include songs with Run DMC, Wu & Wu-Tang affiliates, Kurupt, Stevie Stone & more.
Ready to take your music to the next level? With extensive experience in songwriting, production, and sound design, I've spent years bringing artists' vision to life. From a catchy melody in your head to a radio-ready product with sonic depth and maturity, I will be the conduit to your creative process and lift your song to stand above the rest.
Pro Male Vocalist from successful band
Bring your music to life with my soulful and funky bass lines, guaranteed to elevate any track and get everyone grooving!
Recent Successes
"Dan did a stellar job. actually did more than i had expected him to. awesome."
"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..."
"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..."
"Very Good Engineer, Professional, On-time and willing to go the extra mile !"
"Kain was an absolute delight to work with. He was professional, and was able to get the masters back to me very quick. Due to my neurotic nature, I had a few tweaks I wanted to make (due to my unbalanced mixes more ..."
"Gave me a clean, powerful and professional mix/master in a short amount of time! Would definitely recommend Big Bass Studios to anyone looking for a quality mix or master. Thanks for the good work!"
"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..."
"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"
"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..."
"The care and thoughtfulness of Blush's work is evidenced by the passion in her performance. Her melodic choices, harmonies, ad libs and vocal arrangements are otherworldly. She is easily one of, if not THE most, talen..."
"Eric is very professional and prompt, responding to emails quickly. His extensive experience in the industry is helpful as well."
"Natalie Major delivered recorded vocals, as promised, within the time frame that she said she would. Fantastic voice, excellent recording quality, and an extremely reasonable price. I'm looking forward to working with..."












