1x GUINNESS WORLD RECORD™
Most Streamed Track in 24 Hours

1x GRAMMY AWARD®
Nominee

1x AMERICAN MUSIC AWARD®
Winner

1x BILLBOARD MUSIC AWARD®
Winner

2x RIAA® DIAMOND
Certifications

42x RIAA® PLATINUM
Certifications

7x RIAA® GOLD
Certifications

FEATURED CLIENTS

DISCOGRAPHY HIGHLIGHTS

BIOGRAPHY

Koen Heldens is a renowned international mixing engineer based in Los Angeles, celebrated for his innovative genre-bending approach. Known for seamlessly blending intuition with technical precision, Koen crafts mixes that are not only sonically impeccable but also deeply emotionally resonant. His signature style emphasizes feel and emotion, creating soundscapes that captivate listeners on a visceral level across a multitude of music genres.

Koen has earned a GRAMMY nomination for his work on the 2x RIAA Platinum Certified “Spider-Man: Into the Spider-Verse” Billboard No. 1 soundtrack and has won both an American Music Award and a Billboard Music Award for his contributions to XXXTENTACION's 3x RIAA Platinum Certified debut Billboard R&B No. 1 album, “17”. Notably, he served as the mixing engineer for XXXTENTACION's hit single "SAD!" from the 5x RIAA Certified Billboard 200 No. 1 album “?”, which achieved RIAA Diamond Certification, became a Billboard Hot 100 No. 1 hit, and set a former Guinness World Record for the "Most Streamed Track on Spotify in 24 Hours". “?” currently holds the title of Spotify's most streamed hip-hop album of all time.

Internationally, Koen has achieved multiple Gold and Platinum certifications and contributed to numerous No. 1 albums and singles. He also won an Edison Pop Award (Dutch GRAMMY) for his work on Meau's Gold Certified debut album “22”.

Throughout his illustrious career, Koen has collaborated with some of the biggest names in the music industry, including Kanye West, Juice WRLD, Lil Wayne, Maluma, Roddy Ricch, The Kid LAROI, Trippie Redd, Swae Lee, Rick Ross, Bryson Tiller, KSI, Elley Duhé, Lil Pump, Joyner Lucas, Stefflon Don, Joey Bada$$, Mario, DaniLeigh, Leah Kate, Kid Ink, Lil Skies, Natalie Jane, YBN Nahmir, Keke Palmer, and Vybz Kartel, among many others. His work has resulted in over 80 million record sales and more than 31 billion on-demand audio streams, cementing his legacy as one of the most accomplished mixing engineers in the industry.

PRESS

PRO AUDIO PLUGINS

Koen collaborated with Black Rooster Audio to bring his visionary ideas to life and are regarded for their innovative designs and ease of use, appealing to both beginner and advanced producers alike. Both, the KH-COMP1 and KH-EQ1 are designed with a focus on creative workflows and providing a unique sound design experience.

Koen’s groundbreaking concepts on process timing, channel linking, and side-chain filtering inspired the development team to create a revolutionary tool. After countless hours of development and meticulous listening sessions, this partnership resulted in the KH-COMP1—a cutting-edge compressor that stands as Black Rooster Audio's finest achievement in audio processing.

Continuing the Koen Heldens Signature Series, the collaboration also led to the creation of the KH-EQ1: a professional studio EQ with a twist. Featuring harmonic per-band saturation and an innovative, stepless Mid<->Stereo<->Side router, the KH-EQ1 pushes the boundaries of traditional equalization, offering unmatched creative and technical versatility for audio professionals.

*Black Rooster Audio Plug-Ins (AAX/VST/AU) are compatible with all major digital audio workstations (DAW) and many more.

REVIEWS

PRO AUDIO PARTNERS

CONTACT

Looking to elevate your music?

Whether you need a world-class mix, wish to collaborate, have inquiries about Koen's services, or simply want to connect, Koen is here to help.

Koen works with both major-label (signed) and independent (unsigned) artists and bands, offering personalized rates to suit each project's unique needs. To secure a mixing date, a 50% deposit is required, with the remaining balance due upon project completion.

For details on rates and availability, please reach out using the contact form.

Copyright 2025. Mixed By Koen Heldens. All rights reserved.