This PhD portfolio focuses on research across interactive computer music composition and live performance involving instrumental players and instrumental sounds. It examines methods of disjoining original connections between performers’ actions, the instrument as sound sources, and musical outcomes, and also methods of reconstructing new connections between them via electronic intermediation. At the same time, the portfolio of creative works presented in this study proposes multiple performing styles and explores innovative electroacoustic music as well as its context. Through this portfolio, the composer invites readers to her original sound world and individual musical concepts, which are informed by visually-related ideas such as imaginary views, colours, scenes of a story, and art paintings, alongside their associated titles.