Which song is not by TheFatRat?
Explanation
The song "Ascent" is not by TheFatRat. TheFatRat is a musical artist known for their electronic and EDM tracks, while "Ascent" is a song by Ephixa, another electronic artist. This is evident from the fact that "Ascent" is not listed in TheFatRat's discography, and it carries Ephixa's distinct style.