Wow, yeah it seems entirely plagiarized. It's still a very strange song, but I don't think the AI did anything noteworthy here. Thanks for looking into it!
I highly highly recommend listening to the track called "Test_energylevel", it is absolutely bonkers, and more interesting than any of the other tracks I clicked on here. (You have to click on "Explore" and then scroll down a bit to find it)
It starts with a choir of ambient vocals singing "it's a sunshine", there's some bird noises and traffic sounds, a snippet of organ synth flourishes.
Then it all gets started - guitar, sitar, horns, strings a vocal duet singing "Shine your sweet loving down on me"
There's actually a ton going on, every few bars it changes things up, there's clever little harpsichord.
Then a male singer starts proclaiming "It's a sunshine daaaayyy", backed up by a chorus of "yeah, yeah, yeah"s. Honestly it's kind of catchy
The last 30 seconds or so are truly cursed, there's a voice in the right speaker moaning "wide eyed retina. mostly logical", which gets delayed, bitcrushed, and pingponged between the speakers.
Wow! I wonder why this specific track has so much going on compared to the others.