After losing his captcha, a tone deaf scientist must prove himself human in a music duel, or slave his life in an AI camp

I think, if you go ahead with this project, it would be good to get a consultant in. An expert on current AI with a good prognosis of how they'll work in the future. With my limited understanding of this kind of science, I wouls assume, what they need to measure, is comprehension beyond what a machine can understand and in fact being flawed. A non artificial or purely randomized pattern of flawdness so to speak. Also, may, the ability to create something that a human can appreciate as harmonious better than an AI... which i where his tone deafness would make things interesting. (I'm better at getting characters into trouble than out lol)

Just wondering, is the AI in your world self-conscious? Would that be a game changer? Maybe an additional inner-journey or even deciding to free all those artificial ?people??

In a world where Humans and cyborgs are ranked by their artistic ability, a tone deaf scientist must win a music competition in order to avoid a life of servitude.

as the settings is rather unusual, it is necessary to details so the music duel and its consequence do not appears incongruous.
Also, I think failing a captcha sound better than losing a captcha. Like in Blade Runner, replicants fail the test for humanity.

When he fails a captcha test, a tone deaf scientist must win a music duel in order to prove he is human and avoid being send to a cyborg and AI camp.

What's his dramatic problem?? The power-that-be doubt he's human, suspect he's a clone, a replicant, a cyborg or whatever?? Is that ultimately what's at stake-- proving he's a genuine homo sapien?