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DIAMM (the Digital Image Archive of Medieval Music) is a leading resource for the study of medieval manuscripts. We present images and metadata for thousands of manuscripts on this website. We also provide a home for scholarly resources and editions, undertake digital restoration of damaged manuscripts and documents, publish high-quality facsimiles, and offer our expertise as consultants.

Latest News

New Facsimile

Anne Boleyn facsimile and introductory study is now available from DIAMM Publications

DIAMM Publications

For a limited time, there are copies of ALL DIAMM publications available at a significant discount as they are very slightly damaged (usually just bumped) from our recent warehouse move. These copies are shown on our shop page as ‘seconds’ separately from the main product listing.

The Dow Partbooks

Robert Dow’s partbooks, copied in Oxford around 1580, rank among the most beautiful of all Tudor music manuscripts, and are also an important and authoritative source for the works they contain.

Byrd Masses for 3, 4, 5 Voices

Among the most recognisable works in the sacred Tudor repertory, William Byrd's Masses for 3, 4, and 5 voices are presented in this facsimile edition produced from the original printed editions bound in Christ Church Mus 489-493.

The Eton Choirbook

The Award-winning Full-colour facsimile edition of Eton College Library MS. 178 produced by Diamm Publications, with an extensive illustrated introductory study by Magnus Williamson.

More publications

DIAMM At a glance

  • Images: 55,561 (21 new)
  • Manuscript records: 3,939 (11 recently updated)
  • Person records: 3,794
  • Place records: 693
  • Organization records: 687
  • Archive records: 634

Recently Added Sources

GB-NWcl MB 8, no. 19 (to be confirmed)
fragments from binding, c. 1430-50
D-AAst Beis E 14
Binding with polyphony on flyleaves,
E-GRc s.s. (Liber Matutini et Missae pro Defunctis)
choirbook, late 18th-cent copy of an original from 1560s-70s
US-SM EL 25 A 51 (Ellesmere partbooks)
partbook, c.1600, with later additions to mid-17th century

Recently Updated Sources

B-Tc 476 (Mass of Tournai)
chant book with added polyphony, 14th century
GB-Cu Add. 2764(1)
1420s-30s
I-MOe MS {alpha}.M.1.13
manuscript of polyphony, 1481
I-IV MS CXV (115) (Ivrea Codex)
complete choirbook, 14th century
F-CA MS B 1328
manuscript of polyphony, 13th and 14th centuries