I remember seeing it live when it first came out on MTV, thinking about how it was a stupid idea to make Nirvana play acoustically. Doesn't make sense. I suppose that's why most of this album is covers - that and the fact that Nirvana loved to do covers.
This recording - with all of the conversations and quips between songs, the musical choices, Kurt Cobain's often faltering voice - is a document of his misplaced insecurity. If one allows oneself to ruminate on that, or the myriad other pains that come from being alive, then all that's left is nihilism, bitterness, disgust with oneself.
We are never going to separate the art from the artist in the case of Nirvana. Selfishly, I imagine an alternate reality where he was somehow slightly less tortured. I want to enjoy the art, instead of it feeling like watching a car crash. I have no such morbid curiosity. And I do wish Kurt Cobain had just 1% more resilience. He was a musical genius. It seems like the stuff he left behind was a sketch, the real art was yet to come. Because of that, for me, Nirvana is always heart wrenching to listen, no matter how brilliant.
Setting all of that aside, the album is a bit of a rollercoaster. You can just FEEL the disdain at having to play the "hits," which really brings the whole thing down. You can tell he is not well mentally or physically, exhausted. That energy blankets the entire album. The moments where he gives it some love, or uses the music to try and explain his tortured soul - Pennyroyal Tea, Apologies, Pines - are some of the most astonishing moments in rock music.
It's not the best performance. Nirvana just doesn't work very well in the "unplugged" framework. The whole idea is a little tongue-in-cheek. By this point, Kurt Cobain was sick of it all and had enough. Which sucks for all of us.