Jazz from 1957 to 1967 was the most definitive.

Orpheus10, FWIW, if your so inclined.....There is an interesting discussion on Music Lane in the AudioAsylum site which is talking about HardBop, BeBob, Miles Davis/Kind of Blue and some other aspects of music in general as well. Some of the contributors appear to have something to say that you might appreciate.

Newbee, thanks for the help. I heard Miles mention "Modal jazz" way back then, and I didn't know what he was talking about and I still don't.
Right now, I am hoping someone can "hip me" to the best "West Coast Jazz" available on CD. I also saw a silly comedy movie on TV, set back in the 40's I guess, where they had "Blue Grass" that sounded good to me. If someone has seen that same silly movie, maybe they know what the music was.

Foster_9, could you clue me in on your favorites by Miles after "Bitches Brew"?

Unfortunately for me, this thresd is too true; I am having a hard time finding new music.

Hi Orpheus10, I missed your question from several days ago.
After Bitches Brew things got very spotty for me regarding Miles' music. Over the years I have listened to and enjoyed the double live album "Agharta," "The Man With the Horn," "Tutu," and"Amandla." One I have that was given to me that I really don't like at all is "Live Evil."