Over the past two years, Metro Boomin has quickly become hip-hop’s go-to producer, laying down beats for hit songs like Migos‘ “Bad and Boujee,” Drake and Future’s “Jumpman,” and 21 Savage’s “X.”

Although many would expect him to be influenced by classic hip-hop producers, Metro explained in a recent GQ interview that his biggest inspirations are actually Green Day and horror movies:

Green Day, just because, when I started making beats back then, they had that shit out, American Idiot. Just the sonics of that shit—that whole dark, moody vibe. I naturally, when I make beats, aim for a darker tone just because I’ve always preferred those types of feelings. More than any artist, I feel like horror-movie music influenced my music more than all that shit.

You can read his whole interview here and check out all the lyrics to Metro Boomin’s biggest hits on Genius now.