I think there are rock stars within every subgenre, and for people who are obsessed with musical theater Sutton Foster and Audra MacDonald are like Beyonce to them. I'm sure the a cappella world has their own version of that, and that exists in every geeky subculture.
Let danger never turn you aside from the pursuit of honor or the service to your country. . . Know that death is inevitable and the fame of virtue is immortal