Cutscenes are just completely off in this game, everything in them feels slightly wrong: the music, the dialogue, the animations(more than slightly wrong), the sound mixing, not to mention that up until now they all go on for way too long. I don't know if it's unfinished or just botched but it's a huge step down from Xenoblade where the cutscenes were way more enjoyable.
Also yeah the music in NLA is baffling, I don't get why they went that direction. Overworld themes have mostly been good though.