Sure seems like Fenix Flexin used AI music generator Treblo

The piece reports that Fenix Flexin's track "Rubberz" was confirmed to have been created using the AI music generator Treblo after earlier speculation. Treblo announced an open‑source AI Music Classifier that can identify songs generated by its system, boasting a low false‑positive rate. The tool does not detect music produced by other AI generators.

Summary written by Kernelia from the original article by The Verge — AI. The story and its rights belong to its author.