From Carl: In the class, Paul could also look at a DVD of their chorus or quartet, or listen to their quartet in person, and then talk about where he saw them in the sphere, and why he thought that. (What are you doing most of the time? What are the “markers” of a particular part of the sphere that you are exhibiting? Note how a performer can move from one part of the sphere to another part, even within the same phrase, let alone same song.)
Target audience: Any and all of the attendees of HCNW. This is a way to make the material accessible to all, but not mix it in with the special track.
This could be one 90 minute session, or run it twice on Sunday morning, or make it an 180 minute session.