"A few sound like they may have used my YouTube renditions to get a sense of the tune.

Especially notable are the items that do not have a prominent place in the various Folk and Sea Music scenes. For example, "Roll, Boys, Roll" has not been sung much (at least in my observation). I have gotten many "hits" on my YT vid of that song, presumably because the gamers are looking for recorded versions of the song and they are not otherwise turning up."

Gibb, I love that! Where would the producers of this game be without you?