I'm very intriqued by reciprocals. I notice these inverse patterns all over. So it's not just all the possibilities on a C7 chord or whatever, but the reciprocal possibilities. Like this odd little reciprocal oddity. Am7 and Bm7 are the reciprocals of each other |..B..|...|...|..D..|...|...|...|..F#..|...|...|..A..|...|...|..C..|...|...|...|..E..|...|...|..G..| There seems to be too many reciprocal patterns out there to be nonsence. (some have called it nonsence or that it has no value). In C for ease A C E G B D F A C E G B D F A C E G Are these "Diatonic" Reciprocals or is it wrong?? CEGB = FACE EGBD = BDFA GBDF = GBDF BDFA = EGBD DFAC = CEGB FACE = ACEG ACEG = FACE or are these the real reciprocals <<<<down<<<<<>>>>>>UP>>>>>>> A C E G B D F A C E G B D F A C E G C up EGB = C down Ab,F,Db E up GBD = E down Db,A,Gb G up BDF = G down Eb,C,A B up DFA = B down Ab,F,Db D up FAC = D down B,G,E F up ACE = F down Db,Bb,Gb A up CEG = A down F#,D,B Say your playing A I VI II V in C = Cma7 Am7 Dm7 G7 Cmaj7 = Dbma7 Am7 ..= Bm7 Dm7...= Em7 G7.....= Am7b5 So the reciprocals create various II chords??? I know so little about this. It all sounds so "Lydian" These reciprocals are the perfect "out" notes that do not distract from the sound of the chord your playing. I call it "The Harmonica Effect". Kids blow and inhale on a harmonica creating a I chord (blow) and IV chord (suck) Highly entertaining for the kid. That's the effect of these reciprocals on the diatonic chords. I know so little about this, the math can be intense, but the end result sould is very intriqueing. Is there any similarity to The Lydian Chromatic concept, not that that's my main question. Real life application is my question.