H C A B
https://en.wikipedia.org/wiki/BACH_motif
https://www.youtube.com/watch?v=INKRUAEVRi0
Double and triple fugues, employing two and three subjects respectively:
- Contrapunctus 8, a 3: triple fugue with three subjects, having independent expositions
- Contrapunctus 9, a 4, alla Duodecima: double fugue, with two subjects occurring dependently and in invertible counterpoint at the twelfth
- Contrapunctus 10, a 4, alla Decima: double fugue, with two subjects occurring dependently and in invertible counterpoint at the tenth
- Contrapunctus 11, a 4: triple fugue, employing the three subjects of Contrapunctus 8 in inversion
https://en.wikipedia.org/wiki/The_Art_of_Fugue
| (incipit from Edition Peters Nr. 218) | [page] title in first edition other description |
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[1] Contrapunctus 1 Fuga simplex rectus Simple fugue (one subject) |
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[3] Contrapunctus 2 Fuga plagalis Simple fugue, ends on V (in autograph) |
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[6] Contrapunctus 3 Fuga simplex inversus Simple fugue, inverted |
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[8] Contrapunctus 4 Fuga simplex inversus Simple fugue, inverted |
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[13] Contrapunctus 5 Counter-fugue - fuga inversa Stretto fugue |
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[16] Contrapunctus 6 a 4 in Stylo Francese Fuga inversa Stretto fugue with augmentation and diminution |
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[19] Contrapunctus 7 a 4 per Augment et Diminut Fuga inversa Stretto fugue with augmentation and diminution |
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[21] Contrapunctus 8 a 3 Fuga a tre Soggetti Triple fugue (3 subjects) |
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[26] Contrapunctus 9 a 4 alla Duodecima Fuga rectus with obbligato countersubjects Double fugue (two subjects) |
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[29] Contrapunctus 10 a 4 alla Decima Double fugue (two subjects) |
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[45] Contrap a 4 Fuga inversus with two obbligato countersubjects all Decima (variant of Contrapunctus 10) |
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[32] Contrapunctus 11 a 4 Fuga a quattro soggetti a 4 Triple (quadruple) fugue |
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[61] Fuga a 3 Soggetti Triple fugue (unfinished; possibly planned to be quadruple) |
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[39] Contrapunctus inversus a 4 Mirror fugue in contrappunto simplici a 4 rectus |
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[37] Contrapunctus inversus 12 a 4 Mirror fugue in contrappunto simplici a 4 inversus |
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[41] Contrapunctus a 3 Mirror fuga inversa in contrappunt duplici a 3 inversus |
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[59] Alio modo Fuga a 2 Clav (variant of Contrapunctus a 3 for two keyboards) |
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[43] Contrapunctus inversus a 3 Mirror fuga inversa in contrappunt duplici a 3 rectus |
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[57] Fuga a 2 Clav (variant of Contrapunctus inversus a 3 for two keyboards) |
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[48] Canon per Augmentationem in contrario motu Canon I |
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[51] Canon alla Ottava Canon in Hypodiapason Canon II |
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[53] Canon alla Decima Contrapunto alla Terza Canon III |
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[55] Canon alla Duodecima in Contrapunto alla Quinta Canon IV |