$

Books aren’t something one approves or disapproves of; they are to be understood, interpreted, learned from, shocked by, argued with and enjoyed. Moreover, the evolution of literature and the other arts, their constant renewal over the centuries, has always been fueled by what is now censoriously labeled “cultural appropriation” but which is more properly described as “influence,” “inspiration” or “homage.” Poets, painters, novelists and other artists all borrow, distort and transform. That’s their job; that’s what they do.

Jazz musicians often use different harmonic substitutions to modify the content of diatonicprogressions. The most common harmonic modifications of the Imaj 7 –vi 7 –ii 7 –V 7progression involve the use of secondary dominant chords (V7/X), and tritone substitutions(TR/X 7). Figure 13.5 demonstrates these substitutions using Model III of harmonicrealization.The secondary dominant 7ths A7 and D7 are analyzed with two different Roman numerallabels VI7 and V 7/ii, and II 7 and V 7/V, which can be used interchangeably. The tritonesubstitutions, E≤7 and D≤7, also use two Roman numerals, ≤III7 and TR/VI7, and ≤II7and TR/V7, respectively