Isn't it wonderful how no matter how many come and go, new ones always appear? Ah, them idiots...do they reproduce asexually, do ya think. Who's breeding all these, there can't possibly be a supply big enough >V
I just successfully tested changing music by region, and changing it between continents on the world map after getting on/off the airship. I had to override the default audio transitions with eventing to make it change smoothly but it worked.