This will vary, but typically we shut down the HeadCount table after the headlining artist begins their final set. On rare occasions, a venue will not allow our volunteers access to the venue area and we do not get to see the show. But this is unusual. Generally speaking, you can expect to see most of the show but will probably miss some portions of it. We suggest that people never volunteer if their favorite band is playing, because you need to be prepared to miss some of the music.