hahahha

Review of where we're at currently:

-this song came from an amateur porn video. Link is in the comments below.
-there is a longer version here, with reverb kindly cleaned by flixheff: https://vocaroo.com/
-the woman in the video is uses the name Billy Raise and is from the Czech Republic
-/u/rushtondolls on Reddit contacted Brillbabes, an agency she is signed to- they don't know anything about the song. In any case, the video appears to be not professionally made, so the song was probably not made specifically for porn (as with EKT)
-there is a link to a Reddit post here. Contains some more analysis but no hard-and-fast leads: https://www.reddit.com/r/Lostwave/comments/18zljfz/under_unknown_pop_song_google_shazam_and/