Update index.tsx

src/pc/component/upload-to-resources/index.tsx

@@ -129,7 +129,7 @@ export default defineComponent({
         background: [
           {
             audioFileUrl: froms.mp3,
-            track: "P1",
+            track: props.item?.subjectCode || "acoustic_grand_piano" || "P1",
           },
         ],
         musicImg: froms.musicImg,