Perry's Hat

 is a song in the episode "The Remains of the Platypus". It is the first song in the episode by sequence and the second chronologically. It is heard as Perry's fedora which Carl had lost grip of in the midst of scaling Doofenshmirtz Evil Incorporated drifts around Danville in the atmospheric current before coming to rest at Linda's feet.

Lyrics
Perry's hat, floats on the wind

I wonder where it is going?

Is there a head, it will anoint

Is this herring red or a plot point?

Perry's hat