Someone in a Tree2 said: "Yeah but have you seen it,Hork? It's not that it's bad, exactly, it's just that it'stotally unwanted. A 21-minute musical is not exactly a short.
I saw it. I enjoyed it. If you like Frozen (which most people do ... certainly the kind of people who would go see Coco), I have no idea how it can be considered a bad thing to get more of it, unexpectedly or not. I mean, we got a bonus musical! When does that ever happen? A 21-minute musical is by definition a short -- yeah, it's longer than the usual short that plays before a Disney movie, but it's a pretty standard length for short films in general, and extremely short for a musical (I wouldn't want to see a 5- or 10-minute musical -- that would be more like a music video). I actually enjoyed it more than most of the Pixar shorts (that one with the sandpiper was only six minutes, but it felt endless).