If you've never heard Divine Songs but want to dig deeper into Alice's sound, check it out streaming in full at http://optimisticunderground.wordpress.com/2014/10/07/alice-coltrane-divine-songs/ really lush stuff that's only been released on cassette as far as I know.
If you vary Alice Coltrane with Pharaoh Sanders and Sun Ra with a touch of any John Coltrane, you can see where all the later Jazz fusion came from in the 70's. You have to ride the spontaneity of the music or else you'll never appreciate it.
it has to be more than 10 years now last time i was listening to her...i remembered her to be...more free? like ascension. or stellar regions. perhaps i'm listening to the wrong record now. it's fairly pleasant though.