AI Music App Treblo Flags Fenix Flexin's Billboard Hit Rubberz as AI-Generated

Treblo's AI Music Classifier Flags Billboard Hot 100 Hit

AI music app Treblo has intensified the controversy surrounding Fenix Flexin's "Rubberz" by flagging the track as "very likely Treblo" with "high confidence" using its newly launched open-source AI music classifier2

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. The song, which currently sits at #58 on the Billboard Hot 100 with 7 million YouTube views, has faced AI-generated music accusations since its June release1

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. Treblo CEO Ryan Tremblay stated that "the classifier returns a very high probability score for Rubberz, indicating the released audio was generated almost entirely by our model," potentially making it "the first known AI-generated song to reach the Billboard Hot 100"2

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. The classifier boasts a false positive rate of less than 1 in 1,000, though it only detects Treblo-generated content, not other AI music generators like Suno or Udio2

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Producer Medasin Demonstrates How Rubberz Was Made

Music producer Medasin posted a viral video methodically breaking down how Fenix Flexin allegedly used the AI music generator to create the synth-pop track1

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. Medasin revealed that Treblo was previously called Sonauto until two days before "Rubberz" was released, and a freeze-frame of Fenix's Instagram Story showed a filename with the suffix "Sonauto.mp3"1

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. Using tags like "80s synthwave" and prompting Treblo to write lyrics about "rapper lifestyle," Medasin generated a strikingly similar track with lyrical parallels including "Diamond chains hanging heavy" versus Rubberz's "Now I bought a heavy diamond chain," and "I see your face in the champagne bubbles" compared to "Still seeing your face in the glass"1

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. Medasin told WIRED, "There's just way too many coincidences. It is just a mathematical impossibility that he did not use Treblo"1

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Artist Denials and Unconvincing Evidence

Fenix Flexin has consistently denied using AI-generated music technology, claiming he "freestyled" the lyrics and recorded it "same as all music I do," attributing the different sound to "auto-tune reverb and me using my fake uk accent"1

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. The East Hollywood rapper posted clips claiming to show Pro Tools project files from the recording session, but these low-quality videos have failed to dispel allegations2

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. According to Stereogum, Medasin contended in a since-expired Instagram story that Fenix clearly used an AI stem separator to fabricate the session evidence2

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. The controversy extends beyond Fenix Flexin, as his labelmate Tyga has also been accused of using Treblo to create 80s-themed tracks, with the AI music classifier flagging his songs as well1

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Why Fans and Artists Detected the AI Fingerprints

The song of the summer candidate raised immediate suspicion because it represents a dramatic departure from Fenix Flexin's typical trap-focused sound and recognizable nasally voice from his Shoreline Mafia days1

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. Hip-hop artist and producer Curtiss King spent 30 minutes dissecting the track, stating "You can smell the wires on it"3

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. Songwriter Charlie Harding explained to The Verge that "the drum reverb is full of unnatural digital artifacts reminiscent of a 64kbps MP3 downloaded off of Napster," noting that "most generative AI companies have trained their model on low-quality MP3s of unlicensed copyrighted material, we hear audibly degraded instrumentation"3

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. The uncanny cadences and smoothed-out vocals that combine 1980s Miami synth beats with lyrics swinging from bragging about "pocket's getting thicker" to unrequited love created an immediately suspicious listening experience for audiences familiar with authentic creative processes3

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Growing Public Skepticism Toward AI Use in Music

This controversy emerges amid mounting consumer resistance to AI in music creation. A Luminate study revealed that overall interest in AI use in music dropped from -13 percent to -20 percent in just half a year during 2025, with Gen Z and Gen Alpha showing particular discomfort3

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. Luminate media analyst Audrey Schomer, who authored the report, stated that "people are more likely to feel uncomfortable than to feel comfortable with AI use"3

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. This aligns with broader sentiment, as nearly half of all US citizens view AI negatively according to a recent NBC News survey3

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. The disdain for technology perceived as cheating in creative industries is producing real-world consequences—a Munich court ruled earlier this week that AI music app Suno violated copyright laws and will pay to-be-determined fines to artists3

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. Watch for increased legal scrutiny of AI-generated songs on streaming platforms and potential Billboard policy changes regarding AI disclosure requirements as the line between human and machine creativity continues blurring in ways that audiences increasingly reject.