Pixar film that includes the song "Un Poco Loco” (4)
I believe the answer is:
coco
(Other definitions for coco that I've seen before include "'... the Clown, ... Chanel (4)'" , "address for Chanel" , "French fashion designer, who branched into perfume etc" , "Gabrielle Bonheur Chanel" , "Famous clown" .)