Despite the advent of voice studies, opera scholars have yet to develop a thoroughgoing conversation about one of the most familiar elements of operatic vocal culture: voice type (categories such as soprano, tenor and the like). To address this, I suggest opera scholars analyse ideologies of voice type: the complex of ideas and practices that guide how individuals understand voice types and their relevance to the operatic experience. I devote the main part of this article to a historical case study of ideologies of voice type in action, focusing on Maurice Ravel, his 1911 opera L'heure espagnole, and the relatively obscure voice type Ravel assigned to Ramiro, the opera's male protagonist, the baryton-Martin. I argue that the characteristically modern ideology of voice type Ravel adopted in L'heure espagnole was unusual for its time and that this helps explains the work's reception.