I find it a bit odd if one person does a particular song - then another says - Ah but have you heard the Scottish version and does it, then a third says, yes but what about he American version and does it - ALL before we can do our planned version (a different English version) of it!

Once upon a time "manners" dictated that if you knew another singer had been doing a song, you would not do that song (a) on his home turf or (b) where he was present. This did I think increase the variety of songs one might hear. Certainly I'd be headed for the bar at the start of the second "I'll fly away".