Fenix Flexin, known as a member of Los Angeles-based rap duo Shoreline Mafia, has achieved solo success with “Rubberz,” which reached number 58 on the Billboard Hot 100. However, the track has generated substantial debate regarding its origins, with many questioning whether it was created using artificial intelligence. Fenix has publicly denied these allegations but has taken limited action to conclusively dispel them.
The suspicion stems partly from the song’s dramatic stylistic departure from Fenix’s established catalog. His previous work has centered on trap-influenced West Coast rap, whereas “Rubberz” draws heavily from 1980s UK synth pop, featuring a vocal melody reminiscent of Morrissey and a fake British accent adopted by the artist. While artists commonly explore new creative directions, the specific combination of factors has raised questions. Audio analysis by music experts has identified technical anomalies typically associated with AI-generated content, including brittle hi-hats, compressed vocal qualities, and irregular reverb discontinuities. Dedicated AI music detection tools tested on the track yielded probability estimates between 20 and 30 percent for AI involvement or assistance, though such tools are recognized as having reliability limitations.
Supporting materials connected to the release have triggered higher detection rates. The single’s cover art and promotional posts celebrating its chart performance were flagged as AI-generated with over 97 percent confidence by multiple image detection systems. Analysis of the song’s lyrics using multiple AI writing detection platforms, including Gemini and Claude, indicated signs consistent with AI composition. The lyrical content exhibits patterns characteristic of generative AI output, including simplistic rhyme schemes that prioritize consistency over narrative coherence and nonsensical combinations when lines are examined collectively.
Performance evidence has further complicated Fenix’s position. Multiple in-studio appearances show the artist lip-syncing to the recording, and documented instances reveal his inability to replicate the vocal range, accent, and lyrical precision of the original track. When singing live, backing vocal tracks are maintained at significantly higher levels than his own voice. Fenix has attributed these discrepancies to vocal processing and AutoTune, but music experts including producers and critics have contested this explanation, noting that such technology cannot extend vocal range or introduce regional accents. Despite Fenix sharing what he claims are Pro Tools session files, the lack of comprehensive original project file disclosure leaves the question of authenticity substantially unresolved.
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