Mixing & Mastering Engineers, Producers & Songwriters who worked with WDR TV
Welcome to Haldern Studio. We are a team of music enthusiasts who are running a highly professional studio located at the beautiful landscape of the lower rhine area. We offer long time experiences in the field of audio processing and music production together with a professional studio at highest technical level.
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My name is Luke and I am a mixing engineer who is currently freelancing in Melbourne, Australia. I am experienced at mixing many genres of music. I understand that your music is your art and a huge part of your art is the production and mixing process. Use my services if you’re after a professional mix!
I like to experiment and be unique with my beats!
Your music has soul, let us make it so that it can stand up among the greats to be heard loud and proud.
Genre-bending songwriter and the self-appointed queen of harmonies. Credits include Patti Smith, Francesca Londono and Gloria Aura. Two albums of my own and multiple collaborations out on streaming platforms.
Privileged to have written with artists such as Chris Brown, J Balvin, Ty Dolla $ign, Anitta, Mario, Wiz Kid, Adekunle Gold, Tiësto and more.
Colombian Producer, Mixer and Master Engineer with a Music Degree
I work as a sound engineer for several renowned studios and labels in the music industry. I had the opportunity to collaborate with renowned artists and composers like Tiakola, Lenie, Zed (13Block), Tarik Azouzz and others, mainly on recording and mixing assignments.
With 10+ years of experience, global collaborations, and recent releases with rising artist Pardyalone, I bring industry-level production to every track. I help artists shape their sound, tell their story, and create music that connects. Let’s make something unforgettable.
Recent Successes
"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!!! "
"Easy to work with, polite, and caught the vision of my record. This is the second engineer that I could say, knows what he is doing. God willing I will be sending him more records to mix and master for future projects."
"If you are looking for professional MIX and MASTERING Koen Heldens will do it the best. "
"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..."
"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! "
"Very Professional had no problems making adjustments to the mix. Mike delivered me a high quality mix that sounds big and vocals are crisp and clear. I will definitely use Mike for my next project!"
"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..."
"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,..."
"I have no complaints with what I received from Diamond Groove Services. "
"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"
"Alex did a great job and delivered the project on time. It sounds great! I finally got the sound I was looking for such a long time. Work with him and you won't be sorry!"
"Francois is a great musician, guitarist and bass performer, very creative who put his soul, his top notch technique and experience to my rock song. He also remixed and mastered the song and the result is perfect. Besi..."












