I found a cool video on good ole YouTube of Bannerman in 2008 playing one of the most dynamic Varekai passages (my favourite of the show) wearing a helmet cam.

Two things to look for - at the top of the screen, the performers out front can be seen doing their thing. Listen for the excellent funky electric bass that I forgot to mention above:

https://www.youtube.com/watch?v=YWlKop2DlTA

TAM