Hey Professor, I was wondering about the methods used to come up with substitutions in the rock world as opposed to jazz. Since rock is mainly triads with 7th chords here and there and jazz uses 4 note harmonies and their extensions creating more interconnected relationships making it easier (in my mind) to hear how rootless subs, tritones, having every chord be a possible dominant (opening the door to use it's ii chord for endless prolonging of resolution, adding movement, turn around's), work etc...
Would we use the same approach to rock as with jazz? If not what would the differences be? I am interested in this not only from a soloing pov but from a song writing pov...Thanks!