Talk:Magical Mystery Cure/@comment-99.95.100.127-20130218184000/@comment-5177297-20130218214604

There was no need for a new theme song, as at the beginning of the episode everything was as it always had been, except the weather patterns. The premiere of season FOUR, however, must be updated.

And to commenter #2, yes, there was a theme song(complete with Derpy in the train), but many YouTube uploaders cut it so YouTube doesn't catch them as easily for uploading copyrighted content.