In my internet travels today I ended up going down a Bai Yu/Zhu Yilong singing rabbit hole and thought it would be helpful fodder for your post.

Here's a vid of the outro that has Chinese characters/pinyin/English
https://www.youtube.com/watch?v=VNdZO4EdRco

And here's BY/ZYL singing a song they WROTE about ?? The Guardian? Themselves? It's a LOT.
http://for-the-flail.tumblr.com/post/177392992699/asukajude-arcadianwishdom-there-are-some

And here is an AWFUL video about another Guardian-themed song that the actors are singing. In the description there is Chinese characters/pinyin/English. And can I just say? The main verse is, "Flying together across time" ok.
https://www.youtube.com/watch?v=OHz6e8c0FZY



Needless to say, it's been an emotional day.