We're calling markov chains AI now?
Only the lyrics have been generated. Everything else you hear is just the musician, trying their best to sound like nirvana. No AI wizardry involved.
The lyrics sound less like an unreleased nirvana song, and more like a cut up of their previous songs. Which is to be expected when you feed a relatively small corpus of lyrics into a markov generator.
I get that this is just supposed to be fun. My point is that the title is misleading.