I've gotten pretty good at identifying AI-genned music. There are two tells that I've noticed so far.

The most quantifiable is the presence of a high frequency component that sort of sounds like someone tried to clean up our restore a highly compressed track. It almost sounds kind it's going to start doing that warbling sound that happens when a teleconferencing call has a bad connection but it's just not bad enough to lose connection completely. I guess it's the sound of being highly noise gated.

The other is more qualitative. The song is boring. Like you said, on paper the song should be something I enjoy. But I suddenly notice that there is no... variation or never hook or anything to make it interesting. Anything to make it something other than the result of a machine. The aural equivalent of eating at Applebee's or reading The New Yorker. The songs just kind of plod onward without ever really getting to a point.

It feels kind of like a vivid dream when you're on the edge of lucidity. You can tell something is wrong, but there is something messing with you faculties. You're trying to see where things are going, how things will resolve, and it never happens. It just keeps going and going in a particular mode. If it does change, it's not to resolve, it's to start on a new thread that is an alternate universe version of the previous thread. With no attempt at establishing continuity, no resolution is ever found.