Matthew Chastney is a British composer and producer creating soundtracks for film, games, trailers, and releasing music as ‘The Dreamless Sleep’. A unique collision of emotive string quartet & piano writing, atmospheric electronic production and innovative sound design forms a style inspired by indie classical, ambient and contemporary electronic music.

Passionate about video game music, Matthew has extensive experience implementing game audio and developing dynamic/adaptive music systems using middleware tools such as Wwise and FMOD, and game engines such as Unity.

In 2023 the score for the video game “Tin Hearts” was released to critical acclaim. Other soundtrack credits include trailers for ‘JOKER’, ‘Chernobyl’, ‘Bridgerton’, and original scores for ‘Black Fish’ and ‘Through a Screen Darkly’; two short films that were featured as part of the BBC New Creatives programme, and ‘The Little Soldier Who Dared’ a short animated film narrated by Stephen Fry.

“One of the most beautiful scores written for a video game”GodIsAGeek.com review of “Tin Hearts”

“Just stunning…a name to be listening out for”BBC Introducing

“The biggest star of the show for us, however, is the music. It’s simply wonderful. Focusing on gentle piano tunes and whimsical melodies, the soundtrack is perfectly suited to this kind of game, and it makes the emotional beats of the story hit that much harder. We can’t fault it, quite frankly.”Nintendo Life review of “Tin Hearts”

“The classical score, one of the best I’ve heard in a while, helps to make you care … and believe that toys are magical.”The Daily Mail review of “Tin Hearts”

“The minimal and at times whispered vocals function as an instrument in their own right and provide as much colour and depth as the emotive strings. There’s a feel of Ludovico Einaudi about ‘Tarka’, but it paints a much broader canvas both sonically and emotionally.”AnalogueTrash.com


Oppenheimer – “Hope” TV Spot (2023. Universal Pictures. Music)

Tin Hearts (Video Game. 2023. Rogue Sun. Music, Sound Design, Wwise & Unity Audio Implementation)

The Little Soldier Who Dared (Short Film. 2023. Rogue Sun. Music)

Armageddon Time – “America” TV Spot (2022. Focus Pictures. Music)

Venom: Let There Be Carnage – Official Trailer  (2021. Sony Pictures & Marvel. Remix of Harry Nilsson’s ‘One’)

Cancelled Game Project (Video Game. 2019-2021. Paradox Interactive. Music, Sound Design, Wwise & Unity Audio Implementation)

Bridgerton – Official Trailer (2020. Netflix. Music)

JOKER – Teaser Trailer (2019. Warner Bros. Music Elements & Sound Design)

Chernobyl – Trailer (2019. HBO. Music)

Black Fish (Short Film. 2019. BBC New Creatives. Music)

Through a Screen Darkly (Short Film. 2019. BBC New Creatives. Music)

Unannounced Playstation VR Prototype (Video Game. 2019. Sony. Music, Sound Design, Wwise & Unity Audio Implementation)



Clio Awards 2019 – Gold Award for Chernobyl trailer

Clio Awards 2019 – Grand Award for Joker teaser trailer

Game Audio Network Guild – Student/Apprentice Award for Sound Design
The 10th Annual G.A.N.G Awards

AGS Award for Best Music
Adventure Game Studios Awards – Best Music for “Heroine’s Quest: The Herald of Ragnarok”