一杯月 (Moon in a Cup) was written by Yu-Peng Chen and sang by Yu-Peng Chen and Yin Lin in 2018.
The chorus of this song is used as the main melody in many of the Liyue OST that we are now familiar with, including "Moon in One's Cup", "Maiden's Longing".

Spotify link: https://open.spotify.com/track/2S8IJM...
Link to the song on 163 Music: https://music.163.com/#/song?id=13158...

MV and the song do not belong to me, and no profit is made from this video.

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