I don't think I could be part of a session where someone takes it upon themselves to shout at you what and when to play.

Nigel only does it for that one tune, it doesn't get out of hand.

Also surprised to see how many tunes in the collection are based on the repertoire of bands popular in the 1970s.

Are you just thinking of the Irish tunes in that, or the English ones too? (I wouldn't expect an English session to adopt many recently-popularized Irish tunes).