As for WAV, I think he's got to realise his life's work is only just beginning

I think he thinks his life's work is done - and he's done so little! According to my geekily maintained records, I've sung forty-something traditional songs in public, as well as seventy-odd written by other people and around 30 of my own. I've hardly scratched the surface.

and if one is still singing the same songs as one was a year ago, then maybe it's time one learnt some new ones

Amen to that. I can't imagine not wanting to keep learning new songs. And I do say 'new' - at the moment I've got a strong preference for songs that have marinaded in the oral tradition for a century or so, but every song I learn for the first time is new to me - and with any luck I can make them new for other people.