: To create tension, he utilizes the Diminished (Whole-Half) and Whole-Tone scales. A signature technique involves using the diminished scale over static minor 7th chords to generate "striking outside sounds".
Unlike rock improvisation, fusion requires playing behind the beat on purpose. Look for exercises in the PDF that force you to accent the "and" of 3 and the "e" of 4. Scott Henderson Jazz Fusion Improvisation Pdf
Use the PDF to learn the language. Then, turn off the screen, put down the printout, and play until you forget every rule you just read. : To create tension, he utilizes the Diminished