I love Barley Mow and have sung it before to an appreciative audience. :) They do pay attention to see if you can get all the lines in there! Of course this was at an historic site, where people expect to hear that kind of stuff. I doubt it would go over too well down at the club. Which is why I stick to historic sites.
And you're right, the modern radio listener likes that 3.5 minutes. But that's not necessarily who I'm after.
Regards ---------- Kim