I have an absolute loathing for "elite sessions" and as a result have always made our sessions "informal and with no theme, this formula has always seemed to work due to the fact that the established musicians respected the inexperienced musician and went out of their way to encourage them. I appreciate that it may not always work but have found that a form of mutual respect for each others styles etc and we have never had cause to point at someone and say "right play something"/ "sing something" as they sometimes find that intimidating. Here in Yorkshire, we "Irish" beleive that the music bigger than anyone. Slan