=031  ##$a1.1070.1.$dNA$eTenor is written upside down at the end of the discantus, thus indicating that the Tenor is the discantus in retrograde (not retrograde contrary motion).
=001  1000000650
=041  ##$aUntexted
=100  ##$aAnonymous$02243
=240  ##$aTextless rondeau (I-TRmn 90, 357v)$kRondeau$m3vv, 2 in 1 (D & T) with Ct$oRondeau$0254
=245  ##$aTrent 90
=300  ##$aparts, f.357v
=500  ##$aNA
=773  ##$w1000000065
=852  ##$aI-TRbc$cMS 1377 [90]$eMuseo Provinciale d'Arte, Castello del Buonconsiglio$x218
=695  ##$aretrograde motion canon (cancrizans or crab canon)$b0$c0$dex$eNA$fNA$gNA$hNA$oNA$0309