Listening together-apart is a practice-research project exploring collaborative approaches to the conceptual and actual composition of sound with moving images. Through a portfolio of compositions spanning film, installation, publication, performance, music and sonic arts this thesis explores the notion of the sound-image; an agential entanglement of sound, image, artist, audience, and the matters to which each sound-image speaks. Theories of non-hierarchical, non-binary relation in cultural studies, sound and filmmaking are explored through collaborative projects realised with artists and community groups, using the indeterminacy of Open Works as a site for creative investigation into these matters. This written commentary outlines the theoretical framework for this study and documents the practical and conceptual approaches to each work included in the portfolio.