Gavin is an Irish indie producer and songwriter. His project, Miracle of Sound, has gone on for over 10 years.
Quoting from his YouTube channel’s description:

With over 300 million views and counting, Miracle Of Sound brings you 100% original music, covering many themes including life, love, and the many stories from videogames, movies & TV!…

Because of his music’s close ties to video games, his songs has been used in multiple video games. Some being Wasteland 2, Seven: The Days Long Gone and the Below Zero DLC for Subnautica.