[{"data":1,"prerenderedAt":4},["ShallowReactive",2],{"chart:rhythm-changes":3},"title: Rhythm Changes\nkind: form\nsubtitle: Standard Changes\nstyle: Medium up\nform: AABA, 32 bars\nkey: Bb\n# analysis: 2026-10-22, rules v2; Bb\n# alternates: diminished passing chords (A) and the bebop bridge's ii–Vs; Mark Levine, The Jazz Theory Book\n\n# bar | chord | scale\n\nsection: A1\n1 | Bb6     # tonic: the 4th is in the key\n1 | G7b9    # V7\u002Fii in Bb: the b13 is in the key, the b9 from the symbol\nalt 1 | Bb6     # tonic: the 4th is in the key\nalt 1 | Bdim7   # vii°7 of Cm7: G7♭9 without its root\n2 | Cm7     # ii of the ii–V to Bb\n2 | F7      # V7 of Bb: natural tensions\nalt 2 | Cm7     # ii: Dorian, the key’s own notes\nalt 2 | C#dim7  # passing diminished: a rootless dominant ♭9\n3 | Bb6     # tonic: the 4th is in the key\n3 | G7b9    # V7\u002Fii in Bb: the b13 is in the key, the b9 from the symbol\n4 | Cm7     # ii of F7: Dorian\n4 | F7      # extended dominant: V7 of Bb7\n5 | Bb7     # extended dominant: V7 of Eb7\n6 | Eb7     # IV7 in Bb, not resolving: the #11 is in the key\n6 | Edim7   # ♯IV°7 to I: A7♭9 without its root, the ♯II°7's notes\n7 | Bb6     # tonic: the 4th is in the key\n7 | G7b9    # V7\u002Fii in Bb: the b13 is in the key, the b9 from the symbol\n8 | Cm7     # ii of the ii–V to Bb\n8 | F7      # V7 of Bb: natural tensions\n\nsection: A2\n1 | Bb6     # tonic: the 4th is in the key\n1 | G7b9    # V7\u002Fii in Bb: the b13 is in the key, the b9 from the symbol\nalt 1 | Bb6     # tonic: the 4th is in the key\nalt 1 | Bdim7   # vii°7 of Cm7: G7♭9 without its root\n2 | Cm7     # ii of the ii–V to Bb\n2 | F7      # V7 of Bb: natural tensions\nalt 2 | Cm7     # ii: Dorian, the key’s own notes\nalt 2 | C#dim7  # passing diminished: a rootless dominant ♭9\n3 | Bb6     # tonic: the 4th is in the key\n3 | G7b9    # V7\u002Fii in Bb: the b13 is in the key, the b9 from the symbol\n4 | Cm7     # ii of F7: Dorian\n4 | F7      # extended dominant: V7 of Bb7\n5 | Bb7     # extended dominant: V7 of Eb7\n6 | Eb7     # IV7 in Bb, not resolving: the #11 is in the key\n6 | Edim7   # passing diminished: C7♭9 without its C, the F7's dominant; not functioning diatonically: the symmetric scale\n7 | Cm7     # ii of the ii–V to Bb\n7 | F7      # V7 of Bb: natural tensions\n8 | Bb6     # tonic: the 4th is in the key\n\nsection: B\nbars: 8\n1 | D7      # extended dominant: each one falls a fifth into the next: natural tensions\nalt 1 | Am7     # ii of D7: Dorian\nalt 1 | D7      # extended ii–V: a side-step, its own key\nalt 2 | D7\n3 | G7      # extended dominant: each one falls a fifth into the next: natural tensions\nalt 3 | Dm7    |  | C: ii7  # * ii of the ii–V to C\nalt 3 | G7      # extended ii–V: a side-step, its own key\nalt 4 | G7\n5 | C7      # V7 of V7: the dominant of the dominant: natural tensions\nalt 5 | Gm7     # ii of C7: Dorian\nalt 5 | C7      # V7\u002FV in Bb: natural tensions\nalt 6 | C7\n7 | F7      # V7 of Bb: natural tensions\nalt 7 | Cm7     # ii of the ii–V to Bb\nalt 7 | F7      # V7 of Bb: natural tensions\nalt 8 | F7\n\nsection: A3\ncopy: A2\n",1793484802697]