[LOST MEDIA] Looking for an old Jinsoul x Longguo & Shihyun mashup — “Singing in the.the.the Rain”

Hi everyone! I’ve been searching for a fan-made K-pop mashup that I remember from YouTube for years, and I’m hoping someone here might remember it or have an old copy saved somewhere.
The mashup combined:
Jinsoul (LOONA) — “Singing in the Rain”
Longguo & Shihyun — “the.the.the”
I’m almost certain the YouTube title was “Singing in the.the.the Rain” (with the periods in the.the.the). It was fan-made, not an official remix.
I remember the mashup being uploaded to YouTube sometime around the late 2010s like 2018 or 2019, but I unfortunately don’t remember the channel/uploader, exact upload date, thumbnail, or URL. I’ve tried searching YouTube, Google, and various combinations of the two song titles for years, but I haven’t been able to find it.
The title is probably what I remember most clearly:
Singing in the.the.the Rain
I’m wondering if the video was deleted, the channel was deleted, or it was reuploaded under a different title.
Does anyone remember this mashup?
I know this is a very specific piece of lost media 😭 but I swear it existed. If anyone has any leads, PLEASE let me know!