Music is inherently an auditory art form, rooted in sound, and generally analyzed in terms of its acoustic properties. However, as the process of hearing is affected by seeing, visual information does in fact play an important role in the musical experience. Vision influences many aspects of music -from evaluations of performance quality and audience interest to the perception of loudness, timbre, and note duration. Moreover, it can be used to achieve musical goals that are in fact acoustically impossible. As such, understanding the benefits of embracing (and the costs of ignoring) vision's role is essential for all musicians. Furthermore, since music represents a pervasive and ubiquitous human practice, this topic serves as an ideal case study for understanding how auditory and visual information are integrated. Given that some musically-based studies have challenged and even contributed to updating psychological theories of sensory integration, this topic represents a rich area of research, relevant to musicians and psychologists alike. Why can't orchestral musicians wear t-shirts and flip-flops? The answer to these and other similar questions is that visual information in fact plays an important role in shaping the musical experience. In addition to increasing overall excitement and interest performers use it strategically, harnessing its communicative power to supplement and augment their acoustic output. Therefore rather than a distraction, it is actually a tool useful for musical communication.Although the role of visual information in music is receiving increasing attention by researchers (see Thompson, Graham, &Russo, 2005 andFinnäs, 2001), this work is rarely formally disseminated to or discussed by performing musicians. In part, this gulf stems from the fact that performers and researchers often work in different buildings (if not departments or even universities), rarely attend the same conferences, and almost never read one another's journals. This is not only unfortunate but also ironic, given the obvious importance of this topic to performing musicians (and educators). Therefore the goal of this article is to review research on the role of visual information in music in a manner helpful to performers and researchers alike.The first section will touch on three topics essential to understanding the role of visual information in music. The second reviews the growing literature on this topic organized by musical level. The third discusses questions raised from this survey with respect to the ability of certain instruments to benefit most from the use of visual information. The fourth and final section sets forth reasons for embracing vision as a useful, irreplaceable, and above all natural part of the musical experience. For the sake of clarity and easeof-use, this structure is outlined (with section numbers) in the table of contents below.