In the 80's Genesis and Phil on his own hit Australia on tour a few times and every time it seems they had guest musicians on a couple of songs. From what I remember hearing long ago it was due to union rules in Australia that foreign bands had to employ local musicians during concerts, but I don't know specifics, nor if those rules are still in effect. In fact I don't know if it is the actual reason, though it sounds plausible.
Has anyone heard of this, or can anyone explain otherwise their use of guest musicians in Australia? It's unusual because no other place had the use of string sections on tour.