Musicisoftenthoughtofas“easy”or“playtime”,butit'snottha...
問題詳情：Musicisoftenthoughtofas“easy”or“playtime”,butit'snotthatatcplaysaveryimportantpartinourentswholearnmusiclearnalotofmusichistoryatincludes“modes（調式）”,whichwereusedinchurchesduringthedeve...