diff --git a/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/BaseHitObjectPropertyChangeHandlerTest.cs b/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/BaseHitObjectPropertyChangeHandlerTest.cs
new file mode 100644
index 000000000..0563e1042
--- /dev/null
+++ b/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/BaseHitObjectPropertyChangeHandlerTest.cs
@@ -0,0 +1,18 @@
+// Copyright (c) andy840119 <andy840119@gmail.com>. Licensed under the GPL Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Game.Rulesets.Karaoke.Edit.ChangeHandlers;
+using osu.Game.Rulesets.Objects;
+
+namespace osu.Game.Rulesets.Karaoke.Tests.Editor.ChangeHandlers
+{
+    public abstract class BaseHitObjectPropertyChangeHandlerTest<TChangeHandler, THitObject> : BaseHitObjectChangeHandlerTest<TChangeHandler, THitObject>
+        where TChangeHandler : HitObjectPropertyChangeHandler<THitObject>, new() where THitObject : HitObject
+    {
+        protected void TriggerHandlerChangedWithChangeForbiddenException(Action<TChangeHandler> c)
+        {
+            TriggerHandlerChangedWithException<HitObjectPropertyChangeHandler<THitObject>.ChangeForbiddenException>(c);
+        }
+    }
+}
diff --git a/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/LockChangeHandlerTest.cs b/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/LockChangeHandlerTest.cs
index 492bb27bb..513aed2be 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/LockChangeHandlerTest.cs
+++ b/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/LockChangeHandlerTest.cs
@@ -4,11 +4,12 @@
 using NUnit.Framework;
 using osu.Game.Rulesets.Karaoke.Edit.ChangeHandlers;
 using osu.Game.Rulesets.Karaoke.Objects;
+using osu.Game.Rulesets.Karaoke.Objects.Properties;
 using osu.Game.Rulesets.Karaoke.Objects.Types;
 
 namespace osu.Game.Rulesets.Karaoke.Tests.Editor.ChangeHandlers
 {
-    public class LockChangeHandlerTest : BaseHitObjectChangeHandlerTest<LockChangeHandler, KaraokeHitObject>
+    public class LockChangeHandlerTest : BaseHitObjectPropertyChangeHandlerTest<LockChangeHandler, KaraokeHitObject>
     {
         [Test]
         public void TestLock()
@@ -55,5 +56,18 @@ public void TestUnlock()
                     Assert.AreEqual(LockState.None, hasLock.Lock);
             });
         }
+
+        [Test]
+        public void TestLockToReferenceLyric()
+        {
+            PrepareHitObject(new Lyric
+            {
+                Text = "カラオケ",
+                ReferenceLyric = new Lyric(),
+                ReferenceLyricConfig = new SyncLyricConfig(),
+            });
+
+            TriggerHandlerChangedWithChangeForbiddenException(c => c.Lock(LockState.Full));
+        }
     }
 }
diff --git a/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/Lyrics/LyricPropertyChangeHandlerTest.cs b/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/Lyrics/LyricPropertyChangeHandlerTest.cs
index ce59fed3c..1c95a0895 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/Lyrics/LyricPropertyChangeHandlerTest.cs
+++ b/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/Lyrics/LyricPropertyChangeHandlerTest.cs
@@ -1,14 +1,13 @@
 // Copyright (c) andy840119 <andy840119@gmail.com>. Licensed under the GPL Licence.
 // See the LICENCE file in the repository root for full licence text.
 
-using System;
 using osu.Game.Rulesets.Karaoke.Edit.ChangeHandlers.Lyrics;
 using osu.Game.Rulesets.Karaoke.Objects;
 using osu.Game.Rulesets.Karaoke.Objects.Properties;
 
 namespace osu.Game.Rulesets.Karaoke.Tests.Editor.ChangeHandlers.Lyrics
 {
-    public abstract class LyricPropertyChangeHandlerTest<TChangeHandler> : BaseHitObjectChangeHandlerTest<TChangeHandler, Lyric>
+    public abstract class LyricPropertyChangeHandlerTest<TChangeHandler> : BaseHitObjectPropertyChangeHandlerTest<TChangeHandler, Lyric>
         where TChangeHandler : LyricPropertyChangeHandler, new()
     {
         protected Lyric PrepareLyricWithSyncConfig(Lyric referencedLyric, IReferenceLyricPropertyConfig? config = null, bool selected = true)
@@ -23,10 +22,5 @@ protected Lyric PrepareLyricWithSyncConfig(Lyric referencedLyric, IReferenceLyri
 
             return lyric;
         }
-
-        protected void TriggerHandlerChangedWithChangeForbiddenException(Action<TChangeHandler> c)
-        {
-            TriggerHandlerChangedWithException<LyricPropertyChangeHandler.ChangeForbiddenException>(c);
-        }
     }
 }
diff --git a/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/Notes/NotePropertyChangeHandlerTest.cs b/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/Notes/NotePropertyChangeHandlerTest.cs
index 36591b9ad..e1c5a2fb8 100644
--- a/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/Notes/NotePropertyChangeHandlerTest.cs
+++ b/osu.Game.Rulesets.Karaoke.Tests/Editor/ChangeHandlers/Notes/NotePropertyChangeHandlerTest.cs
@@ -4,10 +4,11 @@
 using NUnit.Framework;
 using osu.Game.Rulesets.Karaoke.Edit.ChangeHandlers.Notes;
 using osu.Game.Rulesets.Karaoke.Objects;
+using osu.Game.Rulesets.Karaoke.Objects.Properties;
 
 namespace osu.Game.Rulesets.Karaoke.Tests.Editor.ChangeHandlers.Notes
 {
-    public class NotePropertyChangeHandlerTest : BaseHitObjectChangeHandlerTest<NotePropertyChangeHandler, Note>
+    public class NotePropertyChangeHandlerTest : BaseHitObjectPropertyChangeHandlerTest<NotePropertyChangeHandler, Note>
     {
         [Test]
         public void TestChangeText()
@@ -71,5 +72,22 @@ public void TestChangeDisplayStateToNonVisible()
                 Assert.AreEqual(new Tone(), h.Tone);
             });
         }
+
+        [Test]
+        [Ignore("Waiting to implement the lock rules.")]
+        public void TestWithReferenceLyric()
+        {
+            PrepareHitObject(new Note
+            {
+                Text = "カラオケ",
+                ReferenceLyric = new Lyric
+                {
+                    ReferenceLyric = new Lyric(),
+                    ReferenceLyricConfig = new ReferenceLyricConfig()
+                }
+            });
+
+            TriggerHandlerChangedWithChangeForbiddenException(c => c.ChangeText("からおけ"));
+        }
     }
 }
diff --git a/osu.Game.Rulesets.Karaoke/Edit/ChangeHandlers/LockChangeHandler.cs b/osu.Game.Rulesets.Karaoke/Edit/ChangeHandlers/LockChangeHandler.cs
index 38ccd67e3..950d56de0 100644
--- a/osu.Game.Rulesets.Karaoke/Edit/ChangeHandlers/LockChangeHandler.cs
+++ b/osu.Game.Rulesets.Karaoke/Edit/ChangeHandlers/LockChangeHandler.cs
@@ -2,6 +2,7 @@
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
+using osu.Game.Rulesets.Karaoke.Edit.Utils;
 using osu.Game.Rulesets.Karaoke.Objects;
 using osu.Game.Rulesets.Karaoke.Objects.Types;
 
@@ -25,11 +26,10 @@ public void Unlock()
 
         protected override bool IsWritePropertyLocked(KaraokeHitObject hitObject)
         {
-            // todo: implement.
             return hitObject switch
             {
-                Lyric => false,
-                Note => false,
+                Lyric lyric => HitObjectWritableUtils.IsWriteLyricPropertyLocked(lyric, nameof(Lyric.Lock)),
+                Note note => HitObjectWritableUtils.IsWriteNotePropertyLocked(note, nameof(Lyric.Lock)),
                 _ => throw new NotSupportedException()
             };
         }