Making Music in the streets

Every Saturday the Salamanca Markets in Hobart is the place to visit should you be in Tasmania. It's one of the most extensive markets I've seen. I said I would only look but my wallet seems surprisingly light.
Buskers always appear at these venues and today was no exception.
I was intrigued by this families combination with father, two daughters and the little drummer boy. There were so many people listening and walking around it took a while for me to obtain a clear photo.

Could they be Tasmania's next "rock and roll" group?