Mixing and mastering engineer John Elleson-Hartley is incredibly passionate about making music sound as good as possible.
Collaborating personally with composers and artists to help bring their tracks and albums to life, ensuring they are completely happy before releasing their music 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,
“Airborne – Nature In Full Flight” is a brand new series for Sky Nature that premieres tonight! With music by the superb Chris Roe, the show takes a bird’s-eye view of some of the world’s Read more…
Fantastic composer Theo Elwell wrote the sound track for “Scott“, written & directed by George Sear. I had the great pleasure of composing the score for ‘Scott’ last year, written & directed by the brilliant @gsear. Really Read more…
Composer duo Intermundia are treating us to some epic Squid Game music with this fantastic cyberpunk-inspired remix of Pink Soldiers! Have a listen below and on your favourite streaming service!! Squid Game (Pink Soldiers) Some Read more…
Joanna Karselis has created a wonderful synth/electronic reimagining of O Holy Night Christmas carol, with the unconventional additions of an 808 and some filthy synths. She does love messing with synths and crafting wonderful sounds! Read more…
Out on SKY Documentaries tonight is this film which takes a look at the major news story that broke in the UK in 2013. It was found that meat unfit for human consumption had been Read more…
The Rupert Cole video game soundtrack for Completely Stretchy is out now! Have a listen to this fun and quirky music with the playlist below. Completely Stretchy by Rupert Cole Loved diving into these tracks 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."