
Sion is a composer and virtuosic multi-instrumentalist whose music is immediate and distinctly exciting, soulful and otherworldly. His presence as performer on all his scores brings with it a unique emotional language and synchronicity with every production.
Recent credits include scoring the FX series Say Nothing starring Lola Petticrew, Maxine Peake, Anthony Boyle and Rory Kinnear, Netflix’s Toxic Town with Jodie Whittaker, Claudia Jessie and Robert Carlyle and Death Valley, starring Timothy Spall and Gwyneth Keyworth for the BBC. Sion is also scoring upcoming Norwegian feature film Adil, and Film 4 commissioned short, Flock.
He created scores for award-winning Welsh language feature film Y Swn, S4C’s Creisis and Netflix’s Rough Cut. He also continues to collaborate with contemporary dance choreographers and create work for numerous productions, most recently working with Joy Alpuerto Ritter on her stage productions Forget Me Not and Oz, Der Zauber in Uns, and Gwyn Emberton on experimental feature film, Y Dewis.
Sion is a prolific releasing artist with a vast back catalogue, be it with his own instrumental music or with his electronic outfit, Future Kult. He resides between Cardiff and Berlin.
Credits
ADIL | Imaginær Film Directors: Adil Khan, Julian Nazario Vargas Producers: Elisabeth Opdal, Eirik Smidesang Slåen Starring: Adil Khan | |
SAY NOTHING | FX Directors: Michael Lennox, Anthony Byrne, Mary Nighy, Alice Seabright Producers: Cass Marks, Joshua Zetumer Starring: Jack Myers, Amy Molloy, Martin McCann | |
TOXIC TOWN | Netflix/ Broke and Bones Writer: Jack Thorne Directors: Euros Lyn, Minkie Spiro Producers: Charlie Brooker, Delyth Scudamore Starring: Claudia Jessie, Robert Carlyle, Rory Kinnear, Joe Dempsie, Jodie Whittaker, Aimee Lou Wood | |
DEATH VALLEY | BBC Director: Simon Hynd Producer: Nikki Wilson Starring: Timothy Spall, Gwyneth Keyworth | |
FLOCK | Film4 Directors: Mac Nixon, Daley Nixon Producer: Matt Ashwell Starring: Fflyn Edwards, Eiry Thomas | |
CROOKS (Additional Music) | Netflix Directors: Marvin Kren Producers: Quirin Berg, Max Wiedemann Starring: Frederick Lau, Christoph F. Krutzler, Sevenja Jung | |
LONDON RECRUITS | Sensorshot Productions Director: Gordon Main Producers: Geoff Arbbourne, James Barrett, Colin A Charles, Felix Gill, Gordon Main Starring: Joe Phillimore, Bethany BBilly, Jack Ayres | |
Y SWN | S4C Directors: Lee Haven Jones Producer: Roger Williams Starring: Rhodri Evan, Mark Lewis Jones, Lily Beau | |
CREISIS | Boom/ S4C Directors: Sion Ifan, Rhys Powys Producer: Marged Beynon Parry Starring: Gwydion Rhys, Sara Gregory, Alex Harries | |
DAL Y MELLT/ ROUGH CUT | Vox Pictures Director: Huw Chiswell Producers: Llyr Morus, Iwan Roberts Starring: Ali Yassine, Gwïon Morris Jones, Mark Lewis Jones | |
JACKDAW | BFI Director: Mac Nixon Producers: Dan Bailey, Edward Casey Starring: Lauren Clarke, Valmai Jones, Sule Rimi | |
FREUD (Additional Music) | Netflix/ Satel Film Director: Marvin Kren Producer: Simone Ruff Starring: Robert Finster, Ella Rumpf, Georg Friedrich |
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Links

Netflix’s ‘Toxic Town’ scored by Sion Trefor premieres 27th February
Netflix’s highly anticipated drama ‘Toxic Town’ scored by Sion Trefor will be available to watch on 27th February. Series trailer out now:

Sion Trefor’s ‘Say Nothing’ soundtrack just released!
Sion Trefor’s soundtrack to ‘Say Nothing’ has just been released on all digital music platforms. ‘“Say Nothing” is a gripping story of murder and memory

‘Say Nothing’ scored by Sion Trefor premieres on Disney+ and Hulu November 14th
‘Say Nothing’ featuring a score by Sion Trefor will premiere on Disney+ in the UK and Hulu in the US Thursday 14th November. ‘Spanning four