5 of us, who don't really know each other, are going to get together soon for a jam session. So what are we gonna play? What are those songs that whenever you go for a jam session that the majority of people will know how to play. We're all amateurs at different levels of ability and I guess the age range of around 35 to 56 years will also impact on the answer. So what are the songs you always expect others to know when sitting in on a jam session?