Yes exactly - the cat chased the rat up the organ pipe and they both got stuck, and the air going through the organ when it was played dried them out.

Google for 'cat rat organ pipe dublin' and you get a few sites, but none dedicated to them exclusively, which is why I did't link any.-

When Sphinx and I went to look at that cathedral in Dublin where they are, they weren't there; so we concocted that funny little story about the Irish sights being on strike...