简体中文
EnglishWebsite review
This review may include AI-generated content and is not individually verified. Domain, certificate and other facts come from the observed data on this page.
What is Measuring Polyphony?
Measuring Polyphony is a digital project that publishes encodings of late medieval polyphonic music — music written for two or more parts — in the mensural notation used in thirteenth- and fourteenth-century manuscripts. Rather than converting the music into modern notation and packaging it into composer- or genre-based volumes, it presents the repertoire as it was copied, alongside high-resolution images of the original sources and MIDI audio files where possible. The project began under director Karen Desmond at McGill University's Schulich School of Music and continues at Brandeis University.
Its stated goals are to make transcriptions and audio freely available to performers, scholars and the general public; to encode the medieval notation in a machine-readable format so the music data can be searched and analysed; and to keep the original manuscript context visible rather than replacing it. The encodings follow the Music Encoding Initiative (MEI) standard, and the site provides downloads and a GitHub presence.
Who it is for
- Performers wanting to sing or play from something closer to the source than a modern edition, with manuscript images to check against.
- Scholars studying notation, scribal practice or repertoire transmission who need searchable, machine-readable data.
- Students and general listeners curious about medieval music who want to see the original pages while hearing a rendering.
What to weigh
The trade-off is directness versus convenience. Mensural notation rewards readers who already know its rules, and MIDI playback conveys pitch and rhythm but not vocal nuance. If you need a quick performing edition, a modern transcription may serve you better; if you want to understand how the music was actually written down and circulated, this approach is the point.
A practical first step: open a piece that links to a manuscript image and its audio, and follow the original notation while listening. The site's own About section documents editorial decisions and known issues, which is the right place to check before citing or performing from an encoding. For broader context on encoding medieval music, see Music Encoding Initiative.
How can I access the digital encodings and transcriptions of late medieval music?
Go to Measuring Polyphony and use the Browse menu to find compositions, then open an entry to see its digital encoding, linked manuscript images where available, and MIDI audio. If you want to understand or reuse the data, the Transcribe and About sections explain the encoding process and editorial decisions, and Downloads (with GitHub) is the route for getting the files themselves.
H3 Practical routes
- Listening or browsing casually: use Browse, then play the MIDI audio beside the manuscript image.
- Studying notation: open a composition's encoding and compare it with the high-resolution source image.
- Research or reuse: go to Downloads/GitHub for machine-readable encodings, and read the About pages on the encoding process and editorial decisions first.
- Teaching: the combination of original image, encoding and audio works well for showing how mensural notation relates to modern editions.
H3 Audience and trade-offs This suits performers, scholars and curious listeners who want late medieval polyphony in its original notational context rather than translated into modern notation. The trade-off is that you are working with encodings and audio files rather than polished performing editions: MIDI playback is useful for checking pitches and rhythms but sounds mechanical, and the site itself notes known issues and editorial decisions that affect how the encodings should be read.
H3 Next step Pick one short composition, listen to the MIDI while following the manuscript image, then read the editorial decisions page for that repertoire. That sequence shows you both what the encoding offers and where interpretation enters.
What is mensural notation and how does it differ from modern notation?
Mensural notation is the system of rhythmic notation used for almost all polyphonic music written between roughly 1300 and 1600. Its name comes from the Latin mensura ("measure"): unlike earlier chant notation, it specifies how long each note lasts, using shapes and contextual rules rather than the fixed note values and time signatures of modern notation. This is the repertoire that Measuring Polyphony presents, encoding thirteenth- and fourteenth-century polyphonic compositions in mensural notation and linking them to manuscript images and audio.
How it differs from modern notation
| Aspect | Mensural notation | Modern notation |
|---|---|---|
| Note values | Shapes whose duration depends on context and on the notes around them | Fixed values (whole, half, quarter, etc.) |
| Rhythm rules | Governed by mensuration signs and relationships such as perfection and imperfection | Governed by time signatures and bar lines |
| Bar lines | Generally absent; the music flows without regular measures | Regular measures mark the metre |
| Pitch | Ligatures and individual note shapes; no stems or beams as we know them | Stems, beams, key signatures and clefs standardised |
| Purpose | Written for singers reading a manuscript tradition | Written for performers and print publication |
The practical consequence is that a modern edition is already an interpretation. As the project describes, translating mensural notation into modern notation, and sorting the repertoire into volumes by composer, genre or country, distances readers from how the music was originally copied and experienced.
What this means for a reader or performer
If you are a singer, student or curious listener, mensural notation lets you see the music as its scribes did: durations inferred from shape and context, without bar lines imposing a modern pulse. A useful next step is to open a piece on Measuring Polyphony, compare the encoded notation with the high-resolution manuscript image, and listen to the MIDI file. That three-way comparison shows concretely where a modern transcription has had to make choices the original notation left open.
Who is the project director and which institutions are involved?
The project director is Karen Desmond. Measuring Polyphony began while she was at the Schulich School of Music at McGill University and now continues at Brandeis University.
For context, the project presents digital encodings of late medieval polyphonic music in mensural notation, with links to manuscript images and MIDI audio where possible. If your interest is scholarly or editorial, the About section of Measuring Polyphony lists the project team, advisory board and editorial decisions, which is the quickest way to see who else has been involved and how institutional roles are described.
How can I contribute to or provide feedback on the project?
Measuring Polyphony has a dedicated Feedback page in its main menu, which is the intended route for comments, corrections, and questions about the project. The site also lists a Project Team and Advisory Board, and maintains a GitHub presence, which is the natural place for technical contributions such as reporting encoding issues or proposing changes to the digital transcriptions.
H3 Practical ways to help
- Report a problem or correction through the Feedback page. Useful reports name the specific piece or manuscript, describe what looks wrong (a note, a text underlay, a misaligned image), and cite the source image if you can.
- Contribute encodings or data via the project's GitHub repository, since the transcriptions are released in the machine-readable MEI format. This suits musicologists, editors, and developers comfortable with encoding standards.
- Offer manuscript or archival expertise if you work with thirteenth- and fourteenth-century sources; the project links transcriptions to high-resolution images, so identifying or verifying sources is valuable.
- Use the material and tell them how — performers, teachers, and scholars who use the transcriptions and MIDI audio can send feedback on what works and what is missing, which feeds into the listed future plans.
H3 What to check first
Before writing, skim the Editorial Decisions and Known Issues pages. Many apparent errors are deliberate choices or already-documented limitations, and referencing those pages makes your feedback more useful. The About section explains the project's goals and its move from McGill University to Brandeis University, which helps you direct questions to the right context.
For a concrete example: if you are preparing a performance and find that a rhythmic interpretation in a motet seems inconsistent with the manuscript image, note the piece, the measure, and the folio, then send it through Feedback — that is exactly the kind of observation the project can act on.
What are the known issues and future plans for the project?
The site answers this directly in its "Known Issues" and "Future Plans" sections, and the latter carries a July 2019 news note. The project description states three goals — free online transcriptions and audio presented alongside manuscript images, machine-readable encoding of the medieval notation for searching and analysis, and (continuing from the excerpt) further work on the repertoire.
What the page tells you
- There are dedicated pages for Known Issues and Future Plans, the latter flagged with a July 2019 update.
- Editorial decisions are documented separately, which matters because encoding choices shape what a search can and cannot find.
- Encodings follow the Music Encoding Initiative (MEI) standard, and downloads are offered via GitHub.
- Compositions are linked, where possible, to high-resolution manuscript images and MIDI audio.
A practical next step
If you are evaluating the data for research or performance, open the Known Issues page before the Future Plans page. Known issues usually describe gaps in coverage, uncertain readings or encoding limitations — the things that determine whether the dataset fits your question. Future plans tell you what may change underneath you, so avoid building a citation or a teaching exercise on a feature listed as planned rather than present.
For the underlying standard, see Music Encoding Initiative. If your interest is the manuscript images rather than the encodings, the libraries that hold the sources are the better starting point.
How to weigh it
| If you need | Go to | Trade-off |
|---|---|---|
| Reliable current coverage | Known Issues | May list gaps that limit a systematic study |
| A sense of direction | Future Plans | Planned work is not yet citable |
| The reasoning behind choices | Editorial Decisions | Assumes some familiarity with mensural notation |
| Reuse in your own tools | GitHub downloads | Requires handling MEI files yourself |
A concrete case: a performer wanting period-appropriate readings can compare the encoding against the linked manuscript image and the MIDI file; a scholar building a corpus study should first check Known Issues for how much of the repertoire is actually encoded, since the project's own framing is that this is a first digitisations effort rather than a complete edition.
GoDaddy
Fastly
User reviews (0)