Update class-info.tsx

src/teacher/video-class/class-info.tsx

@@ -90,6 +90,12 @@ export default defineComponent({
   },
   methods: {
     onChoice(id: number) {
+      // 切换声部，初始化专辑，曲目选择
+      if (id != createState.lessonGroup.lessonSubject) {
+        createState.lessonList.forEach((element: any) => {
+          element.relationList = []
+        })
+      }
       createState.lessonGroup.lessonSubject = id
       this.subjectStatus = false
     },