I only played and own the Japanese version of 4 but did the western release keep Butterfly City for the opening theme?
http://youtu.be/y34gMrRzrt0
Alt link sans music video
http://youtu.be/egVA9oDn4D0
http://youtu.be/y34gMrRzrt0
Alt link sans music video
http://youtu.be/egVA9oDn4D0