What's up with the Plastic Ono Band?

I know the back story. I know about Yoko Ono. I know that the members are ever revolving. What I want to know is how I am supposed to listen to it? I’ve heard a bit of the album with John and there is some crazy “music” on it. I want to be able to understand what I’m listening to even if I can’t really appreciate it.

I ask because the wife is a huge fan of Yoko Ono and Gaga and we are going to see them together at the Orpheum in L.A. in October and I want to be able to at least tolerate the experience.