Best theory behind jazz fusion chords

[N 4 LIFE]

Electronic musician wanting to expand my sound palate to include mid 70s type fusion progressions ala Weather Report, Les McCann, Return to Forever. Best resource for getting into this heady kind of stuff?

Check out the "reharm" videos and jazz voicings in this playlist.

[stash98]

This is the type of stuff that is much easier to understand if you have a strong grasp of the major scale and all of its modes. Once you know that stuff inside and out, it really can help you move to the fusion sound which has a lot of altered scales/chords over ii-V-I progressions. a ii-V-I is a lot easier to navigate with that major scale foundation.