Mixing and Mastering engineer John Elleson-Hartley.
Collaborating personally with you to help bring your music to life, ensuring you are completely happy before releasing your creative work to the world!
John also offers one-to-one online music production coaching and advice for those wanting to improve their skills and sound.
Clients include Emmy & RTS winning composer Nainita Desai, Ivor Novello & BAFTA winning Arthur Sharpe, Ivor nominated composer Chris Roe, Ivor winning Ian Livingstone, Joanna Karselis, Alex Parsons, Marie-Anne Fischer, Marcus Hedges, Miguel d’Oliveira, and Arhynn Descy.
View works mixed and mastered by John Elleson-Hartley,
A stunning album from Nainita Desai, Tessellation, is out now to enjoy! It is the soundtrack for the Fiber Optic Symphonic Orchestra and was composed for “Tessellation. F.O.S.O.“, the art installation in Paso Robles, California! Read more…
There’s a whole lot of superb music within this video game, Wobbly Life! Was wonderful to have mastered the soundtrack for inside the game and the 40 track album which is available here on Steam!!
Out today is this gorgeous collaboration from composers Hilgrove Kenrick and Sam Watts. Mirror has been released for Piano Day 2025 and is available in stereo and Dolby Atmos. One day: two pianos, two continents, Read more…
Marking the amazing length of time that David Lowe‘s BBC NEWS theme has been heard by so many, here’s a new album from David. Including the iconic “Countdown” sequence and also other previously unheard mixes. Read more…
Composers Hannes de Maeyer & Ruben de Gheselle crafted a beautiful, dramatic and melodious soundtrack for Patience. Listen to this Silva Screen Records release below and on your favourite streaming service! Patience Soundtrack The six-part Read more…
Here’s Oleta Haffner‘s wonderful film scoring entry for the 2024 Berlin International Competition. Berlin International Film Scoring Competition 2024 – Oleta Haffner Had a fantastic time working with her in an online score mixing session Read more…
"John helps my compositions and arrangements reach their full potential with his unwavering attention to detail. He’s attentive to what I want for each project and keeps me involved in the process. Without fail, the end result always exceeds my expectations."
"I know that from the moment I bring John on board a project, his attitude is utterly professional, he’s easy to work with and has a great nature where no request is too demanding. His work is exemplary, highly creative and he goes that extra mile making my music ‘sing’."
"It’s a pleasure and a privilege to have John’s ears and expertise on one of my projects. His Mastering brings out so many subtle details in the music and really brings the whole soundtrack to life. Above all, John is a friendly, professional and trusted collaborator to bring on board."
"John has quickly become my go-to mixing and mastering engineer. He has a professional attitude, strong attention to detail, and highly attuned ears. His musicality combined with his commitment to top quality audio makes him a fantastic person to work with. I can't wait to collaborate with him again!"
"I worked with John on my debut EP, and his technical expertise and encouraging spirit paired together to make a smooth and overall exciting musical process. Would highly recommend for anyone unsure on how to give their demos a new life!"
"John’s commitment to excellence in his work is truly remarkable. His unwavering dedication, attention to detail, friendly approach and technical expertise to achieve the highest standards, is evident in every project he has mixed for me, making him a standout professional in his field."