At no time in history have we had a jazz explosion like the decade 59 through 69. While "hard bop" was progressing, another genre was cooking; "West Coast jazz", and it was cool. I went to a movie with a sound track so gripping, that I became engrossed in the music, "Who cared what the movie was about". That was the nature of "west coast jazz"; the very best jazz was on movie sound tracks with long ago forgotten movies.
The sound track from the movie "I Want To Live" is a good example of west coast jazz. If anyone can recall the TV series Peter Gunn, that was also west coast jazz. Grimace might be able to help us on this subject.
My examples are from the sound track of the movie "I Want To Live"" and the Newport jazz festival.
http://www.youtube.com/watch?v=tmp4vtuCWwY
Jazz on a summer day; Jimmy guiffre.
http://www.youtube.com/watch?v=pfLsEH4csQ4