This submission comprises a written commentary and portfolio of musical compositions. The portfolio contains sixty minutes of music across twelve tracks on an album titled Mynd, that explores “A sonic representation of a seemingly quiet and vast landscape, its ecology, geology, its past and present histories.” The music seeks to represent these three areas through a combination of field recording, live composition in the landscape, and studio-based music creation, researching sonic combinations of electro-acoustic methodologies with modern-instrumental arrangements. The thesis explores the notion of authentic representation of this place in the music across all the pieces, exploring the human story, ecology and geology of this landscape. The commentary introduces the methods of my practice-led research, showing how these compositions were created, and examines the method and meaning behind the music, including areas of enquiry that influenced the pieces.