[{"data":1,"prerenderedAt":4},["ShallowReactive",2],{"chart:change-partners":3},"title: Change Partners\ncomposer: Irving Berlin\nstyle: Medium Swing\nkey: F\nform: AABA, 56 bars\n# analysis: 2026-10-31, rules v2; F\n\nsection: A1\n# area: F major (A1 1–17)\n1  | FMaj7    # tonic: the 4th is in the key\n2  | FMaj7\n3  | Abdim7   # passing diminished: G7♭9 without its G, the C7's dominant (Gm7 its ii)\n4  | Abdim7\n5  | Gm7      # ii of C7: Dorian\n6  | C7       # V7\u002FI in F: natural tensions\n7  | Bbm7     # ii of Eb7: Dorian\n8  | Eb7      # back door bVII7 to FMaj7\u002FA: the #11 is in the key\n9  | FMaj7\u002FA  # tonic: the 4th is in the key\n10 | Abdim7   # passing diminished: G7♭9 without its G, the C7's dominant (Gm7 its ii)\n11 | Gm7      # ii of C7: Dorian\n12 | C7       # V7\u002FI in F: natural tensions\n13 | Gm7      # ii of the ii–V to F\n14 | C7       # V7 of F: natural tensions\n15 | F6       # tonic: the 4th is in the key\n15 | D7       # V7\u002Fii in F: the b13 is in the key\n16 | Gm7      # ii of the ii–V to F\n16 | C7       # V7 of F: natural tensions\n17 | F6       # tonic: the 4th is in the key\n# area: Ab major (A1 18 – B 6)\n18 | Bbm7     # ii of the ii–V to Ab\n18 | Eb7      # V7 of Ab: natural tensions\n@ending 1 15 16\n@ending 2 17 18\n\nsection: B\n1  | AbMaj7   # tonic: the 4th is in the key\n2  | AbMaj7\n3  | AbMaj7\n4  | Bbm7     # ii of the ii–V to Ab\n4  | Eb7      # V7 of Ab: natural tensions\n5  | AbMaj7   # tonic: the 4th is in the key\n6  | AbMaj7\n# area: F major (B 7 – A2 16)\n7  | Gm7      # ii of the ii–V to F\n8  | C7       # V7 of F: natural tensions\n\nsection: A2\n1  | FMaj7    # tonic: the 4th is in the key\n2  | FMaj7\n3  | Abdim7   # passing diminished: G7♭9 without its G, the C7's dominant (Gm7 its ii)\n4  | Abdim7\n5  | Gm7      # ii of C7: Dorian\n6  | C7       # V7\u002FI in F: natural tensions\n7  | Bbm7     # ii of Eb7: Dorian\n8  | Eb7      # back door bVII7 to FMaj7: the #11 is in the key\n9  | FMaj7    # tonic: the 4th is in the key\n10 | E7       # tritone substitute: resolves down a half step to Eb7#11\n11 | Eb7#11   # tritone substitute: resolves down a half step to D7b9\n12 | D7b9     # V7\u002Fii in F: the b13 is in the key, the b9 from the symbol\n13 | Gm7      # ii of C7sus: Dorian\n14 | C7sus    # V7sus4 before its dominant: Mixolydian, the 4th is a chord tone here\n14 | C7       # V7 of F: natural tensions\n15 | F6       # tonic: the 4th is in the key\n16 | Gm7      # ii of the ii–V to F\n16 | C7       # V7 of F: natural tensions\n",1793575884828]