Are JSSS scale suggestions the “correct” suggestions?
A. While the scale suggestions in JSSS are based to a very large extent on prevailing accepted opinions and conventional theory, there is no single “correct” way of choosing scales for improvisation. The author has included certain personal preferences. Jazz improvisation is an art and not a fixed science. Ultimately every player develops his/her own preferences. Even though your personal preferences may later lead you to different scale choices, this program should help your development of lifelong habits of analysis which are useful regardless of your eventual scale preferences.