I played some pretty prelude music at the wedding of my neice on the piano a few years ago. Lot's of arpeggios, modulating to different keys (minor and major) and a slowly flowing melody. No one in the audience seemed to recognize I was playing "The Crawdad Song" ("You get a line - I'll get a pole, honey")... But back to Paul Stookey's beautiful song - I'll bet there's a lot of us who can recall weddings where the soloist had a pretty tough time with the rhythm of that song (the loooooong notes) and the accompanist was sweating buckets trying to make it sound good.