=001  1000002361
=040  ##$aAuArU$beng
=041  0#$alat
=100  1#$aHeinrich Isaac$dc1450-1517$0170
=240  10$aMissa De beata virgine 4vv(I): Tu solus$m4vv$0750
=245  10$aDe beate virgine: Tu solus
=300  ##$aChoirbook$801
=500  ##$aCantus Firmus canon
=593  ##$aManuscript copy$801
=594  ##$bVocal parts - 2 in 1: B, A; S, T
=650  07$aMass Section$012
=650  07$aOrdinary of the Mass$08
=691  #7$aIsaac Masses ed Staehelin (1)$n9-10$0578
=691  #7$aIsaac edn. Lerner vol. IV$n52$0579
=695  ##$ainterval canon$b1$c2$dex$e8ve$fAbove$g2$hbreve(s)$oC$0678
=852  ##$aD-Mbs$cMus. MS 47$eBayerische Staatsbibliothek$x24
=980  ##$aRISM$cexamined