This book deals with the interdisciplinarity between music and the visual arts, or in other words between sound and vision in current artistic practice. This study is organised around scientific and technological research, artistic approaches, significant collaborations and very specific questions, illustrating this questioning of the correspondences and boundaries that unite the visual arts and the sound arts today. It was with great curiosity that I ventured into this subject, wishing to focus my analysis on the current period in close connection with the last century, whether through recorded or live music, and the visual arts in both traditional and digital media. This research work has enabled me to meet artists and professionals in these fields, in which I have a particular interest, all in an attempt to shed new light on this issue.