Here are some links to the images of the sources that we sing from on the recording Apostola apostolorum. Almost all the sources are available online, so while enjoying the sheer beauty of the choirbooks, chant books and early prints you can check on our historical practice of singing directly from them. If you want, you can also listen to the recording while following on the images, and maybe — why not? — even sing along! A bit as in this video. For a basic mensural notation reference sheet click here. For a complete manual check Willi Apel’s classic book on polyphonic music notations. But the best way to learn how to sing from mensural notation is… by doing it! Check for upcoming workshops on our education page.
As you will see, each library has its own way of making the sources available, with different kinds of ‘image viewers’, different ways to numerate the images (per folio, per image etc.), sometimes but not always offering the possibility to view the two pages of one opening at a time, as if the choirbook were open in front of you (this is, for instance, possible on the IDEM database). Some of the following links will land you directly on the right image of the source, like the links to the Brabants Historisch Informatie Centrum (BHIC) where you will just have to click on the first thumbnail image you see to open the viewer and enjoy full-sized images. At other times you will have to scroll to a particular page (which we mention here).
If you notice any problems with the links, or have questions or suggestions, please feel free to let us know at <email@example.com> Thank you!
THE DEN BOSCH CHOIRBOOKS, VOL. 3
A Renaissance brotherhood celebrates St Mary Magdalene
 PLAINCHANT Introitus Gaudeamus omnes
BHIC 1232, Inv. no. 152, 90v. Link to BHIC
 PLAINCHANT – Gottschalk of Aachen (fl. 1071-98) Sequentia Laus tibi Christe
BHIC 1232, Inv. no. 152, 91v. Link to BHIC
 NICOLAS CHAMPION/PIERRE DE LA RUE (c. 1452-1518)
Missa de Sancta Maria Magdalena Sanctus
BHIC 1232, Inv. no. 153, 97v. Link to IDEM (scroll to 196_97v). Link to BHIC
with Elevation motet – O salutaris hostia
Brussels, KBR, Ms. IV.922, 4v. Link to IDEM (scroll to 010_4v)
 PLAINCHANT Pater noster
Rome, Biblioteca Apostolica Vaticana, Arch.Cap.S.Pietro.A.47, 36V. Link to DVL (scroll to 36v)
 PLAINCHANT Communio Diffusa est gratia
BHIC 1232, Inv. no. 152, 71. Link to BHIC
 PLAINCHANT Invitatorium Deus in adiutorium
Antiphon Mundi fastum abdicavit
Polyphonic antiphon: BHIC 1232, Inv. no. 158, 36v. Link to BHIC
Ps. 112 Laudate pueri
Plainchant antiphon: BHIC 1232, Inv. no. 162, 87v.
Antiphon Quando Martha satagebat
Polyphonic antiphon: BHIC 1232, Inv. no. 158, 37v. Link to BHIC
Ps. 109 Dixit Dominus
Plainchant antiphon: BHIC 1232, Inv. no. 162, 88.
 PLAINCHANT/ANONYMOUS Hymnus Sydus solare
Plainchant verses: BHIC 1232, Inv. no. 162, 88v.
Polyphonic verses: BHIC 1232, Inv. no. 158, 38v. Link to BHIC
 PLAINCHANT/ANONYMOUS Antiphon Fidelis sermo
BHIC 1232, Inv. no. 162, 89v.
Magnificat I toni: BHIC 1232, Inv. no. 158, 70v. Link to BHIC
 Prefatio: Missale Leodiensis ecclesiae (Speyer: 1502), adapted to the text of the new Vatican preface for the feast approved in 2016; Link to USUARIUM
Link to Münchener DigitalisierungsZentrum (MDZ)
Polyphonic responses: Leiden, Gemeentearchief Ms. 1443
Link to DIAMM
Link to Erfgoed Leiden (EL)
 Rome, Biblioteca Apostolica Vaticana, Arch.Cap.S.Pietro.A.47
Link to Digital Vatican Library (DVL)
 [12-13 – psalms]: Liber usualis
[12 & 13 – plainchant antiphons] [14 – plainchant verses] [15 – antiphon]: BHIC 1232, Inv. no. 162
Link to BHIC