Hello μlain, I just listened to Grey December, It's almost not bad. The only thing is that there's a single inscrutable utterance, sounds something like tram or train, but neither make sense in the context of the rest of the lyrics. Cursory websearching yeilded incomplete lyrics, seemingly copy-pasted around, since they all have the same missing text signified by the same placeholders.
https://invidio.us/watch?v=XURl4f0y6I4
What do you think μlain? What words could fit?
Also, other inscrutables, whatever level the inscrutability, go here.