User blog comment:BigNeerav/Latest news on the Phineas and Ferb Movie/@comment-961279-20101229163406/@comment-1331763-20101229164720

And to add to your point, which I already mentioned here in the blog comments, the song "What Does He Want" was probably slated for the "Phineas and Ferb Christmas Vacation" special episode last December, but was cut due to length requirements. This year, that song was included in the Phineas and Ferv Christmas special (renamed "A Very Perry Christmas"), which aired on television recently, as well as came out on DVDs.