Well let's see... Here's a few from this thread:
- Being really into something and struggling to not correct people when they say something wrong about that thing. And when you do correct them, they think you're being egotistical.
- Being selectively mute
- Having autistic friends
- Having non-typical views about gender and/or sexuality
- Being diagnosed with BPD, bipolar, anxiety, depression, and several other mental health disorders. Especially true for women. This is because doctors tend to suck at identifying autistic people and instead think these other things are what they're seeing.
There are many other signs also, but this is just some that may be helpful. Bear in mind that someone can have any of those things and not be autistic, but when they have a bunch of them together, they're probably autistic.
The reality is that it is a next word prediction machine. There probably aren't any examples in the training data where people are writing music reviews on something that isn't music. It probably interprets the sound as best as it can as "music" (and the best it can do this is likely very bad in the first place), and then, since the prompt was about reviewing music, it uses next word prediction to write a music review, which of course turns out looking like a typical music review. It's not really interpreting the sound as "not music" especially since you told it it IS music.