Now... I could be going crazy, or perhaps just giving something away about my civilisation without realising it, but I seem to have some weird choral music in the background of this particular PBEM, and no other CIV4 game of any type. What's more it seems to be present no matter what is going on, and therefore doesn't appear to be associated with any discovery/unit/wonder/religeon etc...
Is my PBEM haunted? B-)