Rhetoric and composition's increasing attention to multimodal composing involves challenges that go beyond issues of access to digital technologies and electronic composing environments. As a specific case study, this article explores the history of aural composing modalities (speech, music, sound) and examines how they have been understood and used within English and composition classrooms and generally subsumed by the written word in such settings. I argue that the relationship between aurality (and visual modalities) and writing has limited our understanding of composing as a multimodal rhetorical activity and has thus, deprived students of valuable semiotic resources for making meaning. Further, in light of scholarship on the importance of aurality to different communities and cultures, I argue that our contemporary adherence to alphabetic-only composition constrains the semiotic efforts of individuals and groups who value multiple modalities of expression. I encourage teachers and scholars of composition, and other disciplines, to adopt an increasingly thoughtful understanding of aurality and the role it--and other modalities--can play in contemporary communication tasks. (Contains 42 notes.)