They didn't have a bass player at the time, Lorax had just been fired (hence she's still at the back cover?) and I believe I read something that they didn't want Atlantic to think the band was falling apart or something and they just though listing various people would just work out better. I believe it was Pat Fear from White Flag who played the solo on Goin' Blind. Cobain did some percussion on Spread Eagle Beagle I believe or maybe he just walked by the drum kit while being high and fell into Dale's drum kit - I wouldn't be able to tell you the difference. He was a junkie. Buzz hoped for some creative input from his side, but he was dealing with a junkie here.
We're a bunch of nerds, goddammit, and I'm loving every minute of it.