You're bang on, Frank.The highest form of folk music ,to me, includes at least some audience participation.This is why, in my view, some of the greatest performers are people like Pete Seeger, Tom Paxton, Odetta, Bill Staines, and many, many more.Pete Seeger always maintained that the love of music was one thing but singing and/or playing was the true treasure to be enjoyed.Nevertheless, as my wife maintains, everyone needs an audience.She neither sings nor plays but thoroughly enjoys the music.