This I know...you can perform any of these songs for people : Satisfied Mind, Someday Soon, Early Morning Rain, Four Strong Winds, If You Could Read my Mind, and people will instantly recognize and begin to sing along with them. They may or may not who wrote the song. You might get the same recognition in doing Suzanne, but it's less likely. So Lightfoot and Tyson win the trophy when it comes to what should matter most to the people in this forum. They have written songs that have passed into the process and achieved the distinction of becoming Folk Songs, and I personally think the size of the venue will be lost in time, like tears in the rain.