hi. i've had this info for a few weeks, but i wasnt able to tell everyone due to me being blocked.
i asked melanie martinez exposed about 4th Unknown Song, and this is what she said
its an old beat she made but never wrote on, one of her first and last attempts to produce so far, it sucks lol
so yeah, the song does not have any lyrics.
:) sorry i couldnt give you this info sooner, being blocked sucks