Frank Wright was an avant-garde sax player from the ESP stable. If you had to pick a prototypical player from the scene, Frank would be it. Not nearly as distinctive as the more lionized heroes of the scene, and not as obtuse as the most unlistenable honkers.
These are both very listenable albums, at least as far as ESP goes. Grab 'em fast, I've apparently got an angry deleter hanging around.