This may be considered a little off topic, but I'm putting it here for now (the mods will move it later if they wish).

Towards the end of the movie, there's a scene where a mouse plays the bagpipes. They were only on screen twice, but I think they had blowstick, single chanter, and two drones (or maybe one drone, I'm not sure). Given the appearance and sound, I would guess a duda or gaida was the inspiration.

Hopefully one of the piper here can give a better identification.