When in Rome
This repo provides corpora and supplementary material for the following paper:
Dmitri Tymoczko, Mark Gotham, Michael Scott Cuthbert, Christopher Ariza. “The Romantext Format: a Flexible and Standard Method for Representing Roman Numeral Analyses”, 20th International Society for Music Information Retrieval Conference, Delft, The Netherlands, 2019.
The corpora mentioned in the paper are hosted here or on music21 as follows:
- Complete scores and analyses for books 3--5 of the Monteverdi madrigals (48 works). Hosted on music21: all .rntxt files in this folder.
- Complete preludes from the first book of [Bach's Well Tempered Clavier (24 analyses)](/Corpus/Bach Preludes/)
- A sample of Bach chorale analyses (20 analyses). Hosted on music21: all files in this folder.
- The complete Beethoven string quartets, converted from the DCMLab's ABC corpus and with some manual error-correction (16 string quartets, 70 movements). [Hosted here, coming soon]
- A sample of Nineteenth-century French and German songs from the 'Scores of Scores' corpus, including Schubert's complete Winterreise cycle (50 songs). [Hosted here, coming soon]
These lists spell out which pitches are associated with Roman numerals.
This encompasses music21's default reading of:
- Every combination of the figures 2–9 (= 255 total, the number of files)
- Major/minor key (= 2),
- Root accidental ['b', '', '#'] (= 3)
- Scale degree, I-VII (= 7)
- Chord type (o, m, M, +; e.g. ['io', 'i', 'I', 'I+',]). (= 4)
'Make-list.py' provides the (very simple) code for generating these list anew.
The lists were generated with music21's 'quality' default for handling the 6th / 7th degrees in minor mode.
Music21 has four settable options for handling minor key variation.
- Quality: the status of the triad as major or minor (upper or lower case, not accounting for diminished / augmented at this stage) alters the output chord’s root. In this case, ‘vii’ in a minor returns g# minor and the same holds for a diminished alteration (’viio’ = g# diminished). ‘VII’ sets the root to G natural, so ‘VII’ = G major and VII+ is G augmented.
- Cautionary: like 'quality', except that the ‘cautionary’ option ignores one chromatic alteration in the ‘sensible’ direction. So, ‘#vii’ would return g# minor, and not g## minor. Likewise, ‘bVII’ would be G major and not Gb major. This is useful to accommodating cases much of the realistic variation in minor mode conventions — the single, ‘sensible' sharp or flat is like a ‘cautionary accidental’. Further sharps and flats in the ‘sensible’ direction, and any sharps / flats in the opposite direction do change the root.
- Sharp / Raised: explicitly sets the 6th and / or 7th degrees to ‘Sharp / Raised’ (F# and G# in a minor).
- Flat / Lowered: the same for flatten / lowered roots (F and G in a minor).
The following tables set out how these options relate to each other in a minor. The first moves in a logical direction for sharp / flat direction modifications. The second sets out the opposite direction, largely for the sake of completeness.
|Sharp / Raised||g###||g##||g#||G#||G||Gb|
|Flat / Lowered||g##||g#||g||G||Gb||Gbb|
|Sharp / Raised||gb||g||g#||G#||G##||G###|
|Flat / Lowered||gbb||gb||g||G||G#||G##|
Acknowledging and Contributing
Please see music21 for details of the licensing for music21 code and corpora.
You are welcome to use the materials hosted here in your own work. For research and other public-facing projects, please cite or otherwise acknowledge the above paper.
We welcome pull requests, including corrections and additions to the corpus. For any clear error there may be, please suggest a correction; for alternative readings, please submit a separate analysis.