What is the name of the song playing in Monsters University in the credits?

At the end of the movie you see Sulley and Mike working in the mailroom and there progression to become scarers at Monsters Inc. There is a catchy highbeat tune playing all along. Does anyone know the name of that tune/song?
Update: I haven't found this song/tune on the soundtrack of the movie. I thought this was really odd because you would think the credit song would be in the soundtrack?
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