Throughout much of the 20th century, the Western classical vocal aesthetic dominated tertiary singing training in the Republic of Ireland. At the turn of the 21st century, and reflecting similar movements internationally, Irish institutions, examining boards and private teaching studios diversified to include musical theatre and popular styles of singing in degree programmes and syllabi. The purpose of this study was to further understand voice teacher perceptions of these shifts in pedagogical culture. This research questioned how classically trained teachers of singing negotiate teaching across styles in popular music genres, and also questioned if implicit, embodied cultural ideas about classical singing defined their educative approaches to popular music vocals. Data were collected through in-depth qualitative interviews with classically trained teachers of singing in the Republic of Ireland. Analysis of interview data revealed a number of themes which are discussed within a theoretical framework drawn from the work of Bourdieu, revealing that the participant teachers are involved in processes of negotiation and re-negotiation of personal and institutional habitus.