I agree, but it's also really weird that such is the case. It's almost like "classical music" is some kind of code word prompting it to maintain a little musical coherence. The others break down rapidly after you listen to them for 5 seconds or so, but the classical-based one holds up a lot better.

Huh, I actually thought that one was the worst? Felt like it was small unconnected snippets…

Uh - no. That was classic (not classical) formless AI noodling on an orchestral bed.

It has multiple structural layers of a sort, which is progress over a few years ago. But they're still a long way short of the huge but intricate structures in real classical music.