diff --git a/toonz/sources/toonz/cellselection.cpp b/toonz/sources/toonz/cellselection.cpp
index 1824a4d..cf127b1 100644
--- a/toonz/sources/toonz/cellselection.cpp
+++ b/toonz/sources/toonz/cellselection.cpp
@@ -216,11 +216,14 @@ class PasteCellsUndo final : public TUndo {
   TCellSelection *m_newSelection;
   TCellData *m_data;
   std::vector<bool> m_areOldColumnsEmpty;
+  bool m_containsSoundColumn;
 
 public:
   PasteCellsUndo(int r0, int c0, int r1, int c1, int oldR0, int oldC0,
-                 int oldR1, int oldC1, const std::vector<bool> &areColumnsEmpty)
-      : m_areOldColumnsEmpty(areColumnsEmpty) {
+                 int oldR1, int oldC1, const std::vector<bool> &areColumnsEmpty,
+                 bool containsSoundColumn)
+      : m_areOldColumnsEmpty(areColumnsEmpty)
+      , m_containsSoundColumn(containsSoundColumn) {
     m_data       = new TCellData();
     TXsheet *xsh = TApp::instance()->getCurrentXsheet()->getXsheet();
     m_data->setCells(xsh, r0, c0, r1, c1);
@@ -258,6 +261,8 @@ public:
     }
 
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
 
   void redo() const override {
@@ -266,6 +271,8 @@ public:
     // Cut delle celle che sono in newSelection
     pasteCellsWithoutUndo(m_data, r0, c0, c1, r1, true, false);
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
 
   int getSize() const override { return sizeof(*this); }
@@ -284,18 +291,28 @@ public:
 
 class DeleteCellsUndo final : public TUndo {
   TCellSelection *m_selection;
-  QMimeData *m_data;
+  TCellData *m_data;
 
   bool m_doShift;  // whether clear cell or remove and shift cells up
+  bool m_containsSoundColumn;
 
 public:
-  DeleteCellsUndo(TCellSelection *selection, QMimeData *data, bool doShift)
-      : m_data(data), m_doShift(doShift) {
+  DeleteCellsUndo(TCellSelection *selection, TCellData *data, bool doShift)
+      : m_data(data), m_doShift(doShift), m_containsSoundColumn(false) {
     int r0, c0, r1, c1;
     selection->getSelectedCells(r0, c0, r1, c1);
     if (c0 < 0) c0 = 0;  // Ignore camera column
     m_selection = new TCellSelection();
     m_selection->selectCells(r0, c0, r1, c1);
+
+    TXsheet *xsh = TApp::instance()->getCurrentXsheet()->getXsheet();
+    for (int c = c0; c <= c1; c++) {
+      TXshColumn *column = xsh->getColumn(c);
+      if (column && column->getSoundColumn()) {
+        m_containsSoundColumn = true;
+        break;
+      }
+    }
   }
 
   ~DeleteCellsUndo() { delete m_selection; }
@@ -306,10 +323,11 @@ public:
     int r0, c0, r1, c1;
     m_selection->getSelectedCells(r0, c0, r1, c1);
 
-    const TCellData *cellData = dynamic_cast<const TCellData *>(m_data);
     // insert cells if the delete operation had shifted cells up
-    pasteCellsWithoutUndo(cellData, r0, c0, r1, c1, m_doShift, false);
+    pasteCellsWithoutUndo(m_data, r0, c0, r1, c1, m_doShift, false);
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
 
   void redo() const override {
@@ -317,12 +335,15 @@ public:
     m_selection->getSelectedCells(r0, c0, r1, c1);
     deleteCellsWithoutUndo(r0, c0, r1, c1, m_doShift);
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
 
   int getSize() const override { return sizeof(*this); }
 
   QString getHistoryString() override { return QObject::tr("Delete Cells"); }
   int getHistoryType() override { return HistoryType::Xsheet; }
+  bool containsSoundColumn() { return m_containsSoundColumn; }
 };
 
 //=============================================================================
@@ -336,8 +357,11 @@ class CutCellsUndo final : public TUndo {
   TCellSelection *m_selection;
   TCellData *m_data;
 
+  bool m_containsSoundColumn;
+
 public:
-  CutCellsUndo(TCellSelection *selection) : m_data() {
+  CutCellsUndo(TCellSelection *selection)
+      : m_data(), m_containsSoundColumn(false) {
     int r0, c0, r1, c1;
     selection->getSelectedCells(r0, c0, r1, c1);
     if (c0 < 0) c0 = 0;  // Ignore camera column
@@ -349,6 +373,14 @@ public:
     m_data       = new TCellData();
     TXsheet *xsh = TApp::instance()->getCurrentXsheet()->getXsheet();
     m_data->setCells(xsh, r0, c0, r1, c1);
+
+    for (int c = c0; c <= c1; c++) {
+      TXshColumn *column = xsh->getColumn(c);
+      if (column && column->getSoundColumn()) {
+        m_containsSoundColumn = true;
+        break;
+      }
+    }
   }
 
   ~CutCellsUndo() {
@@ -362,6 +394,8 @@ public:
 
     pasteCellsWithoutUndo(m_data, r0, c0, r1, c1, true);
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
 
   void redo() const override {
@@ -374,12 +408,16 @@ public:
 
     clipboard->setMimeData(currentData, QClipboard::Clipboard);
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
 
   int getSize() const override { return sizeof(*this); }
 
   QString getHistoryString() override { return QObject::tr("Cut Cells"); }
   int getHistoryType() override { return HistoryType::Xsheet; }
+
+  bool containsSoundColumn() { return m_containsSoundColumn; }
 };
 
 //=============================================================================
@@ -388,9 +426,19 @@ public:
 
 class InsertUndo final : public TUndo {
   TCellSelection::Range m_range;
+  bool m_containsSoundColumn;
 
 public:
-  InsertUndo(const TCellSelection::Range &range) : m_range(range) {}
+  InsertUndo(const TCellSelection::Range &range) : m_range(range) {
+    TXsheet *xsh = TApp::instance()->getCurrentXsheet()->getXsheet();
+    for (int c = m_range.m_c0; c <= m_range.m_c1; c++) {
+      TXshColumn *column = xsh->getColumn(c);
+      if (column && column->getSoundColumn()) {
+        m_containsSoundColumn = true;
+        break;
+      }
+    }
+  }
 
   void undo() const override {
     TXsheet *xsh = TApp::instance()->getCurrentXsheet()->getXsheet();
@@ -399,6 +447,8 @@ public:
     for (c = m_range.m_c0; c <= m_range.m_c1; c++)
       xsh->removeCells(m_range.m_r0, c, rowCount);
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
   void redo() const override {
     TXsheet *xsh = TApp::instance()->getCurrentXsheet()->getXsheet();
@@ -407,6 +457,8 @@ public:
     for (c = m_range.m_c0; c <= m_range.m_c1; c++)
       xsh->insertCells(m_range.m_r0, c, rowCount);
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
   int getSize() const override { return sizeof(*this); }
   QString getHistoryString() override { return QObject::tr("Insert Cells"); }
@@ -926,13 +978,15 @@ class OverwritePasteCellsUndo final : public TUndo {
   std::vector<bool> m_areOldColumnsEmpty;
 
   QMimeData *m_beforeData;
+  bool m_containsSoundColumn;
 
 public:
   OverwritePasteCellsUndo(int r0, int c0, int r1, int c1, int oldR0, int oldC0,
                           int oldR1, int oldC1,
                           const std::vector<bool> &areColumnsEmpty,
-                          TCellData *beforeData)
-      : m_areOldColumnsEmpty(areColumnsEmpty) {
+                          TCellData *beforeData, bool containsSoundColumn)
+      : m_areOldColumnsEmpty(areColumnsEmpty)
+      , m_containsSoundColumn(containsSoundColumn) {
     QClipboard *clipboard = QApplication::clipboard();
     /*-- ペーストされたセルをdataに保持しておく --*/
     TCellData *data = new TCellData();
@@ -997,6 +1051,8 @@ public:
       cellSelection->selectCells(oldR0, oldC0, oldR1, oldC1);
 
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
 
   void redo() const override {
@@ -1007,6 +1063,8 @@ public:
     // Cut delle celle che sono in newSelection
     pasteCellsWithoutUndo(r0, c0, c1, r1, false, false);
     TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+    if (m_containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
 
   int getSize() const override { return sizeof(*this); }
@@ -1814,6 +1872,7 @@ void TCellSelection::pasteCells() {
     // n.b. devo farlo dopo il paste perche' prima non ho il range delle colonne
     // incollate corrette.
     std::vector<bool> areColumnsEmpty;
+    bool containsSoundColumn = false;
     int c;
     for (c = c0; c <= c1; c++) {
       TXshColumn *column = xsh->getColumn(c);
@@ -1821,6 +1880,8 @@ void TCellSelection::pasteCells() {
         areColumnsEmpty.push_back(false);
         continue;
       }
+      if (!containsSoundColumn && column->getSoundColumn())
+        containsSoundColumn = true;
       int newCr0, newCr1;
       column->getRange(newCr0, newCr1);
       areColumnsEmpty.push_back(!column || column->isEmpty() ||
@@ -1837,9 +1898,12 @@ void TCellSelection::pasteCells() {
     getLevelSetFromData(cellData, pastedLevels);
     LevelCmd::addMissingLevelsToCast(pastedLevels);
 
-    TUndoManager::manager()->add(new PasteCellsUndo(
-        r0, c0, r1, c1, oldR0, oldC0, oldR1, oldC1, areColumnsEmpty));
+    TUndoManager::manager()->add(
+        new PasteCellsUndo(r0, c0, r1, c1, oldR0, oldC0, oldR1, oldC1,
+                           areColumnsEmpty, containsSoundColumn));
     TApp::instance()->getCurrentScene()->setDirtyFlag(true);
+    if (containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
   }
 
   const TKeyframeData *keyframeData =
@@ -2327,6 +2391,7 @@ void TCellSelection::pasteDuplicateCells() {
     if (cellSelection) cellSelection->selectCells(r0, c0, r1, c1);
 
     std::vector<bool> areColumnsEmpty;
+    bool containsSoundColumn;
     int c;
     for (c = c0; c <= c1; c++) {
       TXshColumn *column = xsh->getColumn(c);
@@ -2334,6 +2399,8 @@ void TCellSelection::pasteDuplicateCells() {
         areColumnsEmpty.push_back(false);
         continue;
       }
+      if (!containsSoundColumn && column->getSoundColumn())
+        containsSoundColumn = true;
       int newCr0, newCr1;
       column->getRange(newCr0, newCr1);
       areColumnsEmpty.push_back(!column || column->isEmpty() ||
@@ -2355,8 +2422,9 @@ void TCellSelection::pasteDuplicateCells() {
     getLevelSetFromData(newCellData, pastedLevels);
     LevelCmd::addMissingLevelsToCast(pastedLevels);
 
-    TUndoManager::manager()->add(new PasteCellsUndo(
-        r0, c0, r1, c1, oldR0, oldC0, oldR1, oldC1, areColumnsEmpty));
+    TUndoManager::manager()->add(
+        new PasteCellsUndo(r0, c0, r1, c1, oldR0, oldC0, oldR1, oldC1,
+                           areColumnsEmpty, containsSoundColumn));
     TApp::instance()->getCurrentScene()->setDirtyFlag(true);
   }
 
@@ -2480,6 +2548,8 @@ void TCellSelection::deleteCells(bool withShift) {
 
   TApp::instance()->getCurrentScene()->setDirtyFlag(true);
   TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+  if (undo->containsSoundColumn())
+    TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
 }
 
 //-----------------------------------------------------------------------------
@@ -2500,7 +2570,10 @@ void TCellSelection::cutCells(bool withoutCopy) {
   std::set<int> removedColIds;
   // check if the operation may remove expression reference as column becomes
   // empty and deleted after the operation.
-  if (!checkColumnRemoval(r0, c0, r1, c1, removedColIds)) return;
+  if (!checkColumnRemoval(r0, c0, r1, c1, removedColIds)) {
+    delete undo;
+    return;
+  }
 
   undo->setCurrentData(r0, c0, r1, c1);
   if (!withoutCopy) copyCellsWithoutUndo(r0, c0, r1, c1);
@@ -2532,6 +2605,8 @@ void TCellSelection::cutCells(bool withoutCopy) {
 
   TApp::instance()->getCurrentScene()->setDirtyFlag(true);
   TApp::instance()->getCurrentXsheet()->notifyXsheetChanged();
+  if (undo->containsSoundColumn())
+    TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
 }
 
 //-----------------------------------------------------------------------------
@@ -3247,6 +3322,7 @@ void TCellSelection::overWritePasteCells() {
 
     /*-- 各カラムについて、ペースト前にカラムが空だったならtrue --*/
     std::vector<bool> areColumnsEmpty;
+    bool containsSoundColumn = false;
     int c;
     /*-- ペースト後の各カラムについて --*/
     for (c = c0; c <= c1; c++) {
@@ -3255,6 +3331,8 @@ void TCellSelection::overWritePasteCells() {
         areColumnsEmpty.push_back(false);
         continue;
       }
+      if (!containsSoundColumn && column->getSoundColumn())
+        containsSoundColumn = true;
       int newCr0, newCr1;
       /*-- 新たなカラムに何かペーストされているかどうか --*/
       column->getRange(newCr0, newCr1);
@@ -3270,11 +3348,13 @@ void TCellSelection::overWritePasteCells() {
     LevelCmd::addMissingLevelsToCast(pastedLevels);
 
     /*-- r0,c0,r1,c1はペーストされた範囲　old付きはペースト前の選択範囲 --*/
-    TUndoManager::manager()->add(
-        new OverwritePasteCellsUndo(r0, c0, r1, c1, oldR0, oldC0, oldR1, oldC1,
-                                    areColumnsEmpty, beforeData));
+    TUndoManager::manager()->add(new OverwritePasteCellsUndo(
+        r0, c0, r1, c1, oldR0, oldC0, oldR1, oldC1, areColumnsEmpty, beforeData,
+        containsSoundColumn));
     TUndoManager::manager()->endBlock();
     TApp::instance()->getCurrentScene()->setDirtyFlag(true);
+    if (containsSoundColumn)
+      TApp::instance()->getCurrentXsheet()->notifyXsheetSoundChanged();
 
     delete beforeData;
   } else