I was puzzled that the only proof of its existence was a Reddit post, so to verify it and keep a record I used the Steam download_depot command to download the Glad Giraffe v1 beta of Starbound and found the file.
I then compared it with Undertale’s mus_snowy.ogg, and the only difference I noticed is that it lasts 1:02 compared to Undertale’s 1:44. I didn’t hear any audible differences nor did I see any in Audacity, so this version is simply a shortened cut of Snowy.
(translated into English with AI, sorry for any spelling errors)