diff --git a/src/main/java/com/yutou/nas/Controllers/MusicController.java b/src/main/java/com/yutou/nas/Controllers/MusicController.java
index 685c9f6..7d279b7 100644
--- a/src/main/java/com/yutou/nas/Controllers/MusicController.java
+++ b/src/main/java/com/yutou/nas/Controllers/MusicController.java
@@ -170,7 +170,7 @@ public class MusicController {
         }
         List<MusicData> list = musicTools.getMusicList(true);
         if(_fieldName) {
-            list.removeIf(data -> data.getTitle().contains("instrumental"));
+            list.removeIf(data -> data.getTitle().toLowerCase().contains("instrumental"));
         }
         MusicData data = list.get(Tools.randomCommon(0, list.size() - 1, 1)[0]);
         JSONObject json = new JSONObject();
diff --git a/src/main/java/com/yutou/nas/Services/impl/MusicToolsServiceImpl.java b/src/main/java/com/yutou/nas/Services/impl/MusicToolsServiceImpl.java
index 3df25ba..326c6bf 100644
--- a/src/main/java/com/yutou/nas/Services/impl/MusicToolsServiceImpl.java
+++ b/src/main/java/com/yutou/nas/Services/impl/MusicToolsServiceImpl.java
@@ -156,7 +156,7 @@ public class MusicToolsServiceImpl implements IMusicToolsService {
             return compare.compare(o1.getTitle(), o2.getTitle());
         });
         if (filter) {
-            list.removeIf(data -> data.getTitle().contains("instrumental"));
+            list.removeIf(data -> data.getTitle().toLowerCase().contains("instrumental"));
         }
         return list;
     }