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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

Welcome to our new site!

The new DIAMM site is now live! Read more to find out what's changed, and what you can expect in the next few months.

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 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.

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.

More publications

Recently Added Sources

D-Mbs Ink G-336 - GW 11457
end of 15th century
CH-HE Cod. chart. 151
offset fragment, second half of the 15th century
I-BGc MIA 266
theory treatise, 14th century
I-BGc MA 207
miscellany, mostly chant, with a short section including mensural notation, 15th century
I-BGc MA 589
fragment, 14th century

Recently Updated Sources

F-Lm 316
theory treatise, late 13th century
NL-SH MS 72A
manuscript of polyphony, 1530-1
D-W Cod. Guelf. 12 Helmst.
Fragment, 16th century
GB-Lbl Add. MS 41667 I (McVeagh)
fragment, mid- 14th century