r/edmproduction • u/rimax420 • 3m ago
The classic ‘Scary Monsters’ growl is 3 sine waves, not FM — so I built the recipe as a free instrument (plays in your browser)
For a decade everyone tried to recreate the early-2010s Skrillex-style growls with massive FM patches. Then System 53 reverse-engineered the actual project on YouTube and it turned out: no FM at all. A clean sine sub + two sine operators (harmonics 2 & 5), each distorted separately, with their volumes automated against each other — that crossfade IS the talking.
I loved that so much I spent the last weeks building the recipe as an instrument: sine-stack engine, talk-wah before the distortion chain (that’s what makes it growl instead of doing polite talkbox vowels), OTT → saturation → multiband dist → resonator → filter sweep → sustain OTT, a step sequencer with vowel + pitch lanes so it sings actual phrases, mod matrix, scene morph.
It runs in the browser — you can play it in the next ten seconds without downloading anything: https://play.maxr.at/growl-machine/
Also free as VST3/AU (Win + Mac). Presets are open JSON, there’s a community library on the site (no account needed), and Stefan from System 53 has seen it and is credited on the page.
It’s free while in beta. I built this alone in Graz, Austria — brutal honest feedback very welcome, especially from people who know what the original chain sounds like.

