[{"data":1,"prerenderedAt":4},["ShallowReactive",2],{"chart:isfahan":3},"title: Isfahan\ncomposer: Billy Strayhorn, Ellington\nstyle: Medium Swing\nkey: Db\nform: ABAC, 32 bars\n# analysis: 2026-10-31, rules v2; Db\n\nsection: A1\n# area: Db major (A1 1 – B 2)\n1 | DbMaj7  # tonic: the 4th is in the key\n2 | BbMaj7  # a non-tonic major chord: Lydian\n2 | Bb7#5   # extended dominant: V7 of Eb9; #11 and b13 from the symbol\n3 | Eb9     # II7 in Db, not resolving: natural tensions\n4 | Eb9\n5 | AMaj7   # ♭VImaj7, borrowed from Db minor: Lydian (its ♯11 is in the key)\n6 | Ab13b9  # V7 of Db: the b9 from the symbol\n7 | DbMaj7  # tonic: the 4th is in the key\n8 | DbMaj7\n\nsection: B\n1 | Gm7b5   # iiø7 of F minor: Locrian, the key's own notes (its ♭2 is a passing note)\n1 | C7b9    # V7\u002Fiii in Db: b9 and b13 are in the key\n2 | Fm6     # a minor sixth chord: Dorian\n# area: G minor (B 3–4)\n3 | Am7b5   # iiø7 of G minor: Locrian, the key's own notes (its ♭2 is a passing note)\n3 | D7b9    # V7 of G minor: b9 and b13 are in the key\n4 | Gm6     # tonic minor sixth chord: melodic minor, the raised 7th is a tension\n# area: F major (B 5–8)\n5 | Gm7b5   # iiø7 of F: Locrian, the key's own notes (its ♭2 is a passing note)\n6 | C7b9    # V7 of F: the b9 from the symbol\n7 | FMaj7   # tonic: the 4th is in the key\n7 | EMaj7   # a non-tonic major chord: Lydian\n8 | EbMaj7  # ♭VIImaj7, borrowed from F minor: Lydian (its ♯11 is in the key)\n8 | DMaj7   # a non-tonic major chord: Lydian\n\nsection: A2\n# area: Db major (A2 1 – C 8)\n1 | DbMaj7  # tonic: the 4th is in the key\n2 | BbMaj7  # a non-tonic major chord: Lydian\n2 | Bb7#5   # extended dominant: V7 of Eb9; #11 and b13 from the symbol\n3 | Eb9     # II7 in Db, not resolving: natural tensions\n4 | Eb9\n5 | AMaj7   # ♭VImaj7, borrowed from Db minor: Lydian (its ♯11 is in the key)\n6 | Ab13b9  # extended dominant: V7 of Db7#11; b9 from the symbol\n7 | Db7#11  # V7\u002FIV in Db: the #11 from the symbol\n8 | Db7#11\n\nsection: C\n1 | GbMaj7  # the Db7#11 before it makes Gb the key of the moment: the 4th is in the key\n2 | C7#9    # extended dominant: each one falls a fifth into the next: b9, #9 and #11 from the symbol\n3 | F7#11   # extended dominant: each one falls a fifth into the next: the #11 from the symbol\n4 | Bb7     # extended dominant: each one falls a fifth into the next: natural tensions\n5 | Eb13    # V7 of V7: the dominant of the dominant: natural tensions\n6 | Ab13b9  # V7 in Db, not resolving: the b9 from the symbol\n6 | Ab9#5   # V7 of Db: #11 and b13 from the symbol\n7 | Db6     # tonic: the 4th is in the key\n8 | Ebm7    # ii of the ii–V to Db\n8 | Ab7     # V7 of Db: natural tensions\n",1793575891883]