[{"data":1,"prerenderedAt":4},["ShallowReactive",2],{"chart:mood-indigo":3},"title: Mood Indigo\ncomposer: Duke Ellington\nstyle: Ballad\nkey: Ab\nform: ABCD, 32 bars\nrecording: Duke Ellington; Ellingtonia, Volume One; Brunswick; 1950\nyoutube: DMUrAD7EXJQ\n# analysis: 2026-10-19, rules v2; Ab\n# recording: recorded 1930-10-17 as Dreamy Blues (credited to The Jungle Band, Ellington's band), first issued on 78 (Brunswick 4952, 1930), LP 1950 (BL 58002) (Discogs, Wikipedia); video: Early Ellington: The Complete Brunswick and Vocalion Recordings 1926-1931, the same take\n\n# bar | chord | scale\n\nsection: A\n1 | Ab      # tonic: the 4th is in the key\n2 | Bb7     # II7 in Ab, not resolving: natural tensions\n3 | Bbm7    # ii of the ii–V to Ab\n3 | Eb7     # V7 of Ab: natural tensions\n4 | Ab      # tonic: the 4th is in the key\n5 | Ab\n6 | Bb7     # II7 in Ab, not resolving: natural tensions\n7 | E7      # tritone substitute: resolves down a half step to Eb7\n8 | Eb7     # extended dominant: V7 of Ab7\n\nsection: B\n1 | Ab7     # I7 in Ab, not resolving: natural tensions\n2 | Ebm7    # ii of the ii–V to Db\n2 | Ab7     # V7\u002FIV in Ab: natural tensions\n3 | Db      # the Ab7 before it makes Db the key of the moment: the 4th is in the key\n4 | Gb7     # ♭VII7 from the parallel minor: Lydian Dominant\n4 | Eb7     # V7 of Ab: natural tensions\n5 | Ab      # tonic: the 4th is in the key\n6 | Bb7     # II7 in Ab, not resolving: natural tensions\n7 | Bbm7    # ii of the ii–V to Ab\n7 | Eb7     # V7 of Ab: natural tensions\n8 | Ab      # tonic: the 4th is in the key\n\nsection: C\n1 | Ab\n2 | Bb7     # II7 in Ab, not resolving: natural tensions\n3 | Bbm7    # ii of the ii–V to Ab\n3 | Eb7     # V7 of Ab: natural tensions\n4 | Ab      # tonic: the 4th is in the key\n4 | F7      # V7\u002Fii in Ab: the b13 is in the key\n4 | Bbm7    # ii of the ii–V to Ab\n4 | Eb7     # V7 of Ab: natural tensions\n5 | Ab      # tonic: the 4th is in the key\n6 | Bb7     # V7 of V7: the dominant of the dominant: natural tensions\n7 | Bb7\n8 | Eb7     # extended dominant: V7 of Ab7\n\nsection: D\n1 | Ab7     # I7 in Ab, not resolving: natural tensions\n2 | Ebm7    # ii of the ii–V to Db\n2 | Ab7     # V7\u002FIV in Ab: natural tensions\n3 | DbMaj7  # the Ab7 before it makes Db the key of the moment: the 4th is in the key\n3 | Db7     # IV7 in Ab, not resolving: the #11 is in the key\n4 | Db7\n4 | Eb7     # V7 of Ab: natural tensions\n5 | Ab      # tonic: the 4th is in the key\n6 | Bb7     # II7 in Ab, not resolving: natural tensions\n7 | Bbm7    # ii of the ii–V to Ab\n7 | Eb7     # V7 of Ab: natural tensions\n8 | Ab      # tonic: the 4th is in the key\n8 | F7      # V7\u002Fii in Ab: the b13 is in the key\n8 | Bbm7    # ii of the ii–V to Ab\n8 | Eb7     # V7 of Ab: natural tensions\n",1793484801483]