thE primAry purposE oF thE pAssAgE is to______.
A．introDuCE thE rEADEr to josquin AnD ACCount For his rElAtivE oBsCurity
B．DEsCriBE thE mAin FEAturEs oF mEDiEvAl musiC AnD show how josquin ChAngED thEm
C．plACE josquin's musiC in A historiCAl ContExt AnD show its inFluEnCE on lAtEr ComposErs
D．EnumErAtE thE FEAturEs oF josquin’s musiC AnD supply CritiCAl CommEntAry