I asked a retired pro Irish trad box player about this once - he said ' if they are that good why are they having a session? Seems to make sense to me - but I do know when to put 'it' up - like I walk in on a session where a player like Joe Cooley is givin it out :)

Wanabes read here

The young folk are playing 60's folk GOOD BYE AND GOOD RIDDANCE