Krzysztof Kessler is a London-based freelance audio engineer, music producer and multi-instrumentalis. Songs he mixed and mastered have been featured on Spotify Release Radar, used on viral TikTok videos and have received airplays from BBC Introducing. He also worked with artists signed to Universal Music Poland and have
co-produced a remix that was featured on Kerrang!


  • Mixing & Mastering
  • Music Production
  • Studio Engineering


Krzysztof has mixed and mastered several songs for me in the past few months. He is a consummate professional, always turns them around incredibly quickly, and keeps you in the loop throughout the process, explaining all of his decisions. I really enjoy working with him and would always thoroughly recommend him!


I’ve had Krzysztof mix and master multiple tracks that I’ve produced and I can say, without hesitation, that he is by far one of the most reliable and professional engineers I’ve had the pleasure of working with. He consistently delivers incredible-sounding mixes and masters on (and often before!) schedule and responds brilliantly to feedback, ensuring that you will always get a final product you can be proud to call your own. Working with him is a pleasure and I would highly recommend getting in touch with him for your next project!


Krzysztof is a great mixing and mastering engineer! Throughout the entire process of mixing and mastering my 4 track EP, Krzysztof worked professionally, with fast turnaround times and excellent communication. He was very accommodating to all my revision notes and worked with me to ensure I was happy with the end result, which I am!