Online resources
Catalogue of chant texts and melodies
The Cantus Index serves as the leading catalog for recognizing chant texts and their corresponding melodies, and it also provides additional links. It consolidates various websites and databases, enabling users to search through different categories of chant (such as antiphons, responsories, Ordinary chants, hymns, and sequences) as well as specific feast days:
Concerning the texts and melodies for Mass and Office within the medieval Gregorian tradition – displayed synoptically with valuable information about the Biblical origins of the texts – see:
Antiphonale/Graduale Synopticum
Developed by Max Haas, ‘Chant Digger’ stands out as a premier search tool for Mass melodies, encompassing the Gregorian, Old Roman, and Milanese traditions:
Music Theory
The complete texts of medieval Latin music theory – which frequently cite and analyze specific chants and offer details about modality, among other things – are included in the Thesaurus Musicarum Latinarum project at the Center for the History of Music Theory and Literature:
The Lexicon musicum Latinum (LmL) stands as another essential tool, working methodically through key vocabulary present in medieval musical texts, arranged alphabetically:
The Handwörterbuch der musikalischen Terminologie is a project concerning musical terminology also included more thorough articles on particular words found in medieval musical treatises, and this can be searched alphabetically as well:
Bibliography
The ‘Liturgical Chant Bibliography’ in Plainsong and Medieval Music regularly compiles and publishes new works on chant.
Medioevo Musicale (MEM) is a bibliographic and discographic bulletin on medieval musical culture and liturgy. Medioevo Musicale is also available online in the Mirabile database.
Discography
Since 1972, Jerome Weber has been compiling data for his A Gregorian Chant Discography; he has also written discography articles for Plainsong and Medieval Music. All of this information has now been gathered onto a specific website:
Personal Websites
David Hiley, with Robert Klugseder’s assistance, has put together particularly notable resources:
For details regarding French manuscript sources containing notation and searchable databases for sequences, hymns, Kyrie chants, and much more, consult the website of Christian Meyer:
Music-Writing Programmes
One of the simplest and most effective programmes to transcribe chant into modern notation remains Volpiano and plans are afoot to make it compatible with MEI:
As another good option, NoteAbilityPro is available for free download, though it is exclusively for Mac users: