I Saw the TV Glow is Alex G's second feature film scoring assignment after We're All Going to the World's Fair (2021), also directed by Schoenbrun.

[7][8] Jourdain Searles of The Hollywood Reporter wrote "Alex G's haunting soundtrack emulates the depressed, sonically chaotic sound of 90s rock".

[9] Katie Rife of IGN described the score as "louder and more grating", while Chris Bumbray of JoBlo.com called it as "highly effective".

[10][11] Chad Collins of Dread Central and Taylor Antrim of Vogue called it as "sensational" and "excellent".

"[14] Jen Yamato of The Washington Post wrote "composer Alex G's thrumming indie pop soundscape conjure a shadow world that looms over the mundane suburbs".