Overview
- Producer and artist Medasin posted a technical, viral takedown in late July arguing that Fenix Flexin’s summer hit “Rubberz” was generated with Treblo (formerly Sonauto) and showing how the software can reproduce similar lyrics and vocal timbres.
- Fenix Flexin responded by uploading what he said were Pro Tools stems and project clips and privately messaged Medasin, then deleted the public post hours later, a move critics say strengthened suspicion rather than settling the dispute.
- Medasin and others allege Fenix used a stem-separation tool to split Treblo output into vocals, instruments, bass and drums, then layered his real voice over those stems to make the files look like authentic session material.
- Independent analysis and multiple AI detectors returned modest AI-likelihood scores of roughly 20–30 percent and experts flagged audio artifacts such as brittle hi-hats, cut-off reverb tails, and unnatural backing vocals that are commonly seen in generative-music output.
- The episode has focused industry and public attention on transparency: artists and producers debate whether AI tools should be disclosed, detectors remain probabilistic rather than definitive, and platforms may face pressure to require clear labeling and provenance for AI-assisted tracks.