Mixing & Mastering Engineers, Producers & Songwriters who worked with Giants
My name is Jack Longman and I make records for bands and artists. My passion is helping people record and release the music that they love.
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I am a Recording and Mixing Engineer currently based in Berlin, after having worked in studios in New York for four years. I am experienced in recording, mixing and mastering a wide range of musical genres, including Indie Rock, Jazz, Classical Music and post-mixing for film.
Over 20 years into being a producer / mix / mastering engineer who plays guitar, keys, bass and drums, so I can help transform your songs from home demos into release-ready tunes!
I do things and stuff!
Grammy Nominee, gold and platinum record credits, produced billboard #1 song in 2019. Have done sessions with Will Smith, The Weeknd, Arkells, 5sos, 6lack, Nav, Andrea Bocelli, Boi 1da, T-Minus, Rex Kudo, Bob Ezrin, Alex Da Kid. Let me use my experience to bring your project to the next level and create the perfect experience for you and your fans.
Versatile session vocalist, topliner & writer. Berklee College of Music graduate. Multi-genre with focus on Pop/R&B. 10M+ streams globally, featured on Netflix, New Music Friday. Collaborated with industry giants Ryan Tedder, Virginia to Vegas, Naliya and Kayla Diamond. Ready to elevate your project with chart-topping vocals and emotion! 🎶✨
Multi-Platinum music producer, songwriter, mixer, and pianist with over 10 years of experience in the music industry. My work has garnered credits from major labels and achieved over 50 million streams on various platforms. I have also been featured on Swedish and Danish national TV and radio.
arminwave is a #1 charting music producer from Germany. Besides producing for German industry giants like Apache 207 and Katja Krasavice he also managed to work for U.S. artists such as Lil Duke, NoCap or Earthgang.
I craft precision-engineered tension and underscores for high-stakes narratives. Specialist in 'Dialogue-Safe' music for Investigative and Reality TV.
Recent Successes
"Great guy, great producer, eager to get the job done and make his clients happy."
"Good to work with and great communication."
"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!!!!"
"I have no complaints with what I received from Diamond Groove Services. "
"Andrew works quickly and communicates well to finish your job. He sent over test masters quickly and even gave me a couple of different ones, which went a long way in my decision to hire him. He did an excellent job,..."
"Robert L. Smith is a true professional! Very helpful and got my tracks sounding their absolute best! Highly recommended! "
"His price was low and his mixing was good. It is easy to tell that Irving knows what he's doing. Thanks!"
"Awesome work."
"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."
"highly recommended. very skilled, creative, and good attention to detail. quick turnaround. professional. "
"Andrew did an amazing job with my tracks. He helped me through the entire process, arranging, recording, mixing, mastering, and was excellent at each part. He is very knowledgeable and has great artistic talent and ..."
"Great experience. Mike took a complex song I gave him with some limited vocal performances on my part and made the song shine. He has a very good ear, a love for music, good beside manner and a very strong technical..."












