Was the "Cake Song" released in a soundtrack? I have 3 Puella Magi Madoka Magica The Rebellion Story soundtracks. they are,


OP Single - Colorful
ED Single - Kimi no Gin no Niwa
Original Soundtrack


I believed this was all there was and while waiting for an appointment i searched though all 3 looking to see if i could find the Cake Song that the Puella Magi sing at the beginning of the movie (when the Nightmare is changed into a cake for Bebe to eat). 

i thought i might find it as just before i listened to wo ist die Kase? from Puella Magi Madoka Magica The Beginning Story &amp; The Eternal Story Original Soundtrack, Track 7. if i remember correctly this is the song/chant that's in the background when Sayaka and Madoka enter a labyrinth before Mami saves them, and it only goes for about 40-45 seconds (track file on my iPod/iPhone says 50 seconds however there's a block of silence at the end).

But after listening to all the songs in The Rebellion Story soundtracks i couldn't find the Cake Song. However i admit i didn't listen to the entirety of every song, rather the first couple of second then i skip about a couple of minutes to listen to another couple of seconds.

So i am wondering if the Cake Song was officially released on a soundtrack, if so which one?
Cake Song from Puella Magi Madoka Magica the Movie Part III: Rebellion has not been officially released as part of any soundtrack for the anime. Fortunately, there are many sites to download the mp3 for free.