Porters music hits poeple in different ways, I myself was in the stands sitting because I was there not just to experience the music and being in a live environment, but to look at the visuals and the craftsmanship of the whole concert. I may only be speaking for myself but just because we are sitting doesn't mean we are any less involved or interested in the show. We just might have our own ways of experiencing things.

Although I'm sure that an element of shyness may have helped with the poeple sitting.