Playboi Carti dropped "Whole Lotta Red" on Christmas Day 2020, and most of the conversation went to Carti himself: the vampire persona, the Kanye West executive producer credit, the polarized fan reaction. The name that got skipped over was Richard Ortiz. F1lthy. The Philadelphia producer who made "Rockstar Made," "Stop Breathing," "New Tank," and "On That Time" built the sonic architecture that everything you love about rage rap runs through. The album hit number one on the Billboard 200 with 100,000 album-equivalent units in its first week. The genre it defined is still expanding. The man who designed it still barely gets the credit.
F1lthy started making beats in 2012 on FL Studio, inspired by SpaceGhostPurrp and the Miami rap group Metro Zu, both of whose murky, deliberately degraded textures gave him a template he then pulled apart and rebuilt on his own terms. He co-founded the Philadelphia producer collective Working on Dying alongside his younger brother Jordan, known as Oogie Mane. The collective built early connections with Lil Uzi Vert, who was introduced to Oogie Mane and Forza in 2013 when they were all freshmen at Northeast High School. Working on Dying was deep in the ecosystem before it had a name. They were making the sound before the sound had a genre.
What F1lthy actually does in the studio is specific. His signature production tag, "Wake up, F1lthy," announces a particular kind of beat: guttural, crunchy, with minimalist melodic loops sitting on top of bass that feels like it is actively trying to destroy the speaker. On "Rockstar Made," the album's opener, co-produced with Jonah Abraham, the synths are blown out and cycling, and Carti's ad-libs stop being vocals and start being percussion. The room itself produced the sound. F1lthy's tag opens the album, and his production fingerprints are on the tracks that define it.
"Stop Breathing" is the clearest proof of what F1lthy is doing. The bass is weaponized. The beat has no interest in being comfortable. It sits at the intersection of trap and noise music, which is exactly the space the rage community has been colonizing ever since. "On That Time" runs the same logic: post-apocalyptic, frenetic, a beat that sounds like a final boss theme written by someone who grew up on Chief Keef and industrial music simultaneously. These are not conventional rap instrumentals with a few distorted elements added for texture. They are built from distortion outward, with melody as an afterthought or a provocation. That distinction is why the sound spread the way it did. You cannot make a tamer version of "Stop Breathing." The aggression is structural.
It is worth noting that the album landed at number one despite coming in below industry projections of 125,000 to 135,000 units for its first week. The gap between what analysts expected and what actually moved tells you something about the album's audience: it was not a mainstream pop crossover. It was a cult record that happened to chart at the top. That combination, underground DNA at commercial scale, is part of what made the sound so durable.
Before "Whole Lotta Red," F1lthy was working in the underground with artists like Bladee, LUCKI, and Black Kray. He was already a known figure in the internet rap world, known the way a lot of essential producers are known: by the people who were already paying close attention. The Carti album changed the scale. It brought his approach to a mainstream audience that had no framework for it, and it held. F1lthy then kept moving. He produced Lil Yachty's 2022 viral hit "Poland." He made beats for Yeat and Drake. He produced a significant portion of Bladee's "Cold Visions," building on their earlier collaboration, the Working on Dying album from 2018. He became a member of Carti's Opium label, which means his production fingerprints are on the entire next generation of the sound: Ken Carson, Destroy Lonely, Homixide Gang, the artists whose music the rage community has been running on repeat.
The lineage is direct and verifiable. One Substack analysis of F1lthy's production approach names LAZER DIM 700, OsamaSon, Xaviersobased, and Nettspend as the most prominent artists working in the wake of the Ortiz-Carti collaboration. Those names are all over the Opium orbit. The sound that defines the current moment in rage rap, the blown-out bass, the vocals that dissolve into the beat, the beats that approach noise music from the trap side, all of it traces back to a kid in Philadelphia who heard SpaceGhostPurrp and Metro Zu in 2012 and spent six months learning FL Studio. The architect of the room should not have to introduce himself.
