I don't know how many times Peter Paul & Mary performed at Western Michigan University; I was there for two of their concerts. They were, without a doubt, the best, most enjoyable concerts I've ever been to. The music was good, PPM got the audience involved, they were funny, and afterward, when we went backstage (my best friend was a music major there at the time), they were kind. Peter Yarrow gave out hugs. I've always hoped I could see them in concert once again, but that won't happen. RIP, Mary Travers.