This is Zappa's most avant garde work.  If Ornette Coleman, Albert Ayler, and Peter Broztmann got together and made a rock album, it would sound like this.  My favorites are the opener Did Ya Get Onya?, the title track, and My Guitar Wants to Kill Your Mama.  This is Zappa's wildest, most free jazz influenced album, and I really dig it.  It's remarkable for many reasons.  It's really a bunch of leftover tracks from the Mothers of Invention.  The group had already broken up, but Zappa still managed to put out a few more albums with Mothers of Invention material.  Despite the fact that they're leftover tracks, the album is very coherent and feels like there was a greater concept behind it.  Despite being one of Zappa's most challenging albums, I really, really like it, and the more I play it, the better it gets.  If you have neighbors who are annoying, or the local teenagers won't go home, or your girlfriend and/or boyfriend are becoming like a tumour that just won't go into remission, put this album on.  I've always wondered why this album didn't hit #1 in America (I think it peaked at #189 on the chart).  It's the feel good album of the year.  It feels good when it chases annoying people away...