Haven't looked at the other responses yet, though I will after I post.
1 - Sounds like Dolphy's "Miss Ann", though obviously not Dolphy. The drummer on this cut turned me off so much that I had trouble picking up on the other musicians.
2 - I didn't care for the pianist. I assume it was his date. I did enjoy what little I heard of the saxophonist.
3 - Someone has learned his Ornette. No idea who it is. Charles Brackeen or Sonny Simmons came to mind, but I don't think that either of them would play anything quite so close to Ornette. I'd probably buy this recording.
4 - Sounds to me like the musicians were influenced by the AACM, though they could be European. Sounds like something from the 1970's.
5 - This isn't something that appeals to me - I tend to be more of a straight ahead blowing fan - though somehow I have the feeling that with more listening it might grow on me.
I enjoyed listening to several of these tracks (3,4, possibly 5). I love being exposed to music that's new to me, even if I'm shown up as a dummy who couldn't identify anything here.