It's OK Howard J. I guess many others have made similar blunders here on the Mudcat forum, including myself.

Perhaps we should combine the two threads and call it: "is it Ok to sing from a 'UK Climbing' song book?"
That would certainly confuse people and perhaps attract them to the thread out of pure intrigue.

I can't, however, imagine people rock climbing and singing from a song book at the same time. That does boggle the imagination and 'Extreme Sports' comes to mind!

Although I do remember once mountain walking with a school party (in my younger days) up the Snowdon Horseshoe in North Wales (three point climbing) and one of our teachers singing "The hole in the elephant's bottom" song whilst we were climbing up the mountain.................!!

But I must confess... he wasn't singing from a song book at the time!