I didn't realize that you all had moved over to another thread so I posted my 2 cents worth on the original. Sorry, but I don't feel like re-typing it here. I would be interested in seeing Bill D's paper effort to categorize the art of song, mostly folk. Somewhat related to the topic, I am working on a program to trace music across time and continents. I am curious to hear what this group, Mudcat Masters of Music, would consider the definitive collection of classic folk songs that have travelled across country and continent boundaries. Please keep in mind the Bruce O. 60 year rule and that changes to lyrics or music are okay as long as the original or earliest know version is still recognizable. Ladies and gentlemen, let the nominations begin...