** Having not seen these movies I can only assume the vocals are meant to be this terrible (especially from the one who seems to do the majority of the singing and is either four years old or wishes she was) and these people lose the "world championship" that they must only be at in an Eric the Eel fashion, otherwise you could surely get someone who sounded better. Add that to my general distaste for medleys and this is something I'd prefer didn't exist.
* A lot of this comes back to the fact that medleys are seldom cohesive, and this one just takes the cake for that because it's a sloppy mess. Plenty of shameless transitions that just do not work in the context of what it's trying to do. Not to mention the vocals are quite poor also but I would at least hope this works within the context of the film. 1.5