The first Mingus album I purchased was in 59, or 60; it was the one with the modern artwork; as a matter of fact, that's why I purchased it, I don't recall knowing who Charles Mingus was.
After I took it back to the barracks and played it for my "jazz crew", none of us knew quite what to make of Mingus, but we kept playing that album noting unique and different things each time we played it.
Since that time, the same experience has been repeated over and over; each time I play a new Mingus album, I hear unique and different things.