Theres something unsettling about any artists posthumous work.
But its particularly macabre in the case of Kurt Cobain, whose relationship to Nirvanas music was complicated.
The content is exceptionally raw: Most songs are snippets or free-form instrumental noodles.

Credit: Kevin Mazur/WireImage
Vocals are rough and mumbly.
Other tracks arent even music, but rather sound tests (Reverb Experiment) and crazy-eyed comedy skits.
Whats most compelling about the set is how it captures Cobains passion and intensitynot his slacker-junkie persona.
Its hard to gradeMontage of Heck.
Considering sound quality and execution of ideas, its in the lower C range.