diff --git a/src/MixerBoard.cpp b/src/MixerBoard.cpp
index 2ab7e76fd..cd1ab5d4b 100644
--- a/src/MixerBoard.cpp
+++ b/src/MixerBoard.cpp
@@ -212,7 +212,7 @@ MixerTrackCluster::MixerTrackCluster(wxWindow* parent,
                .Style( DB_SLIDER )
                .Orientation( wxVERTICAL ));
    mSlider_Gain->SetName(_("Gain"));
-   this->UpdateGain();
+
 #ifdef EXPERIMENTAL_MIDI_OUT
    mSlider_Velocity =
       safenew MixerTrackSlider(
@@ -224,7 +224,6 @@ MixerTrackCluster::MixerTrackCluster(wxWindow* parent,
                .Style( VEL_SLIDER )
                .Orientation( wxVERTICAL ));
    mSlider_Velocity->SetName(_("Velocity"));
-   this->UpdateVelocity();
 #endif
 
    // other controls and meter at right
@@ -260,8 +259,6 @@ MixerTrackCluster::MixerTrackCluster(wxWindow* parent,
             ASlider::Options{}.Style( PAN_SLIDER ));
    mSlider_Pan->SetName(_("Pan"));
 
-   this->UpdatePan();
-
    // mute/solo buttons stacked below Pan slider
    ctrlPos.y += PAN_HEIGHT + kDoubleInset;
    ctrlSize.Set(mMixerBoard->mMuteSoloWidth, MUTE_SOLO_HEIGHT);
@@ -278,7 +275,6 @@ MixerTrackCluster::MixerTrackCluster(wxWindow* parent,
       *(mMixerBoard->mImageMuteUp), *(mMixerBoard->mImageMuteOver),
       *(mMixerBoard->mImageMuteDown), *(mMixerBoard->mImageMuteDown), 
       *(mMixerBoard->mImageMuteDisabled));
-   this->UpdateMute();
 
    ctrlPos.y += MUTE_SOLO_HEIGHT;
    mToggleButton_Solo =
@@ -289,7 +285,6 @@ MixerTrackCluster::MixerTrackCluster(wxWindow* parent,
                   *(mMixerBoard->mImageSoloDisabled),
                   true); // toggle button
    mToggleButton_Solo->SetName(_("Solo"));
-   this->UpdateSolo();
    bool bSoloNone = mProject->IsSoloNone();
    mToggleButton_Solo->Show(!bSoloNone);
 
@@ -322,11 +317,12 @@ MixerTrackCluster::MixerTrackCluster(wxWindow* parent,
          mMeter->SetToolTip(_("Signal Level Meter"));
    #endif // wxUSE_TOOLTIPS
 
+   UpdateForStateChange();
+
    #ifdef __WXMAC__
       wxSizeEvent event(GetSize(), GetId());
       event.SetEventObject(this);
       GetEventHandler()->ProcessEvent(event);
-      UpdateGain();
    #endif
 }
 
@@ -450,77 +446,51 @@ void MixerTrackCluster::ResetMeter(const bool bResetClipping)
 }
 
 
-// These are used by TrackPanel for synchronizing control states, etc.
-
-// Update the controls that can be affected by state change.
+// Update appearance to match the state of the track
 void MixerTrackCluster::UpdateForStateChange()
-{
-   this->UpdateName();
-   this->UpdatePan();
-   this->UpdateGain();
-}
-
-void MixerTrackCluster::UpdateName()
 {
    const wxString newName = mTrack->GetName();
-   SetName(newName);
-   mStaticText_TrackName->SetLabel(newName);
-   mStaticText_TrackName->SetName(newName);
-   #if wxUSE_TOOLTIPS
-      mStaticText_TrackName->SetToolTip(newName);
-   #endif
-   mBitmapButton_MusicalInstrument->SetBitmapLabel(
-      *(mMixerBoard->GetMusicalInstrumentBitmap(mTrack.get())));
-   Refresh();
-}
+   if (newName != GetName()) {
+      SetName(newName);
+      mStaticText_TrackName->SetLabel(newName);
+      mStaticText_TrackName->SetName(newName);
+#if wxUSE_TOOLTIPS
+         mStaticText_TrackName->SetToolTip(newName);
+#endif
+      mBitmapButton_MusicalInstrument->SetBitmapLabel(
+         *(mMixerBoard->GetMusicalInstrumentBitmap(mTrack.get())));
+   }
 
-void MixerTrackCluster::UpdateMute()
-{
    mToggleButton_Mute->SetAlternateIdx(mTrack->GetSolo() ? 1 : 0);
    if (mTrack->GetMute())
       mToggleButton_Mute->PushDown();
    else
       mToggleButton_Mute->PopUp();
-}
 
-void MixerTrackCluster::UpdateSolo()
-{
    bool bIsSolo = mTrack->GetSolo();
    if (bIsSolo)
       mToggleButton_Solo->PushDown();
    else
       mToggleButton_Solo->PopUp();
    mToggleButton_Mute->SetAlternateIdx(bIsSolo ? 1 : 0);
-}
 
-void MixerTrackCluster::UpdatePan()
-{
-   if (!GetWave()) {
+   if (!GetWave())
       mSlider_Pan->Hide();
-      return;
-   }
-   mSlider_Pan->Set(GetWave()->GetPan());
-}
+   else
+      mSlider_Pan->Set(GetWave()->GetPan());
 
-void MixerTrackCluster::UpdateGain()
-{
-   if (!GetWave()) {
+   if (!GetWave())
       mSlider_Gain->Hide();
-      return;
-   }
-   mSlider_Gain->Set(GetWave()->GetGain());
-}
+   else
+      mSlider_Gain->Set(GetWave()->GetGain());
 
 #ifdef EXPERIMENTAL_MIDI_OUT
-void MixerTrackCluster::UpdateVelocity()
-{
-   if (!GetNote()) {
+   if (!GetNote())
       mSlider_Velocity->Hide();
-      return;
-   }
-   mSlider_Velocity->Set(GetNote()->GetVelocity());
-}
+   else
+      mSlider_Velocity->Set(GetNote()->GetVelocity());
 #endif
+}
 
 void MixerTrackCluster::UpdateMeter(const double t0, const double t1)
 {
@@ -704,6 +674,8 @@ void MixerTrackCluster::OnMouseEvent(wxMouseEvent& event)
 
 void MixerTrackCluster::OnPaint(wxPaintEvent & WXUNUSED(event))
 {
+   UpdateForStateChange();
+
    auto selected = mTrack->GetSelected();
 
    wxColour col = theTheme.Colour(selected ? clrTrackInfoSelected : clrTrackInfo) ;
@@ -773,8 +745,6 @@ void MixerTrackCluster::OnButton_Mute(wxCommandEvent& WXUNUSED(event))
    // Update the TrackPanel correspondingly.
    if (mProject->IsSoloSimple())
    {
-      // Have to refresh all tracks.
-      mMixerBoard->UpdateSolo();
       mProject->RedrawProject();
    }
    else
@@ -789,12 +759,6 @@ void MixerTrackCluster::OnButton_Solo(wxCommandEvent& WXUNUSED(event))
    mToggleButton_Mute->SetAlternateIdx(bIsSolo ? 1 : 0);
 
    // Update the TrackPanel correspondingly.
-   if (mProject->IsSoloSimple())
-   {
-      // Have to refresh all tracks.
-      mMixerBoard->UpdateMute();
-      mMixerBoard->UpdateSolo();
-   }
    // Bug 509: Must repaint all, as many tracks can change with one Solo change.
    mProject->RedrawProject();
 }
@@ -957,6 +921,10 @@ MixerBoard::MixerBoard(AudacityProject* pProject,
    mProject->GetTracks()->Bind(EVT_TRACKLIST_DELETION,
       &MixerBoard::OnTrackSetChanged,
       this);
+
+   mProject->GetTracks()->Bind(EVT_TRACKLIST_TRACK_DATA_CHANGE,
+      &MixerBoard::OnTrackChanged,
+      this);
 }
 
 
@@ -1157,80 +1125,6 @@ void MixerBoard::ResetMeters(const bool bResetClipping)
       mMixerTrackClusters[i]->ResetMeter(bResetClipping);
 }
 
-void MixerBoard::UpdateName(const PlayableTrack* pTrack)
-{
-   MixerTrackCluster* pMixerTrackCluster;
-   this->FindMixerTrackCluster(pTrack, &pMixerTrackCluster);
-   if (pMixerTrackCluster)
-      pMixerTrackCluster->UpdateName();
-}
-
-void MixerBoard::UpdateMute(const PlayableTrack* pTrack /*= NULL*/) // NULL means update for all tracks.
-{
-   if (pTrack == NULL)
-   {
-      for (unsigned int i = 0; i < mMixerTrackClusters.size(); i++)
-         mMixerTrackClusters[i]->UpdateMute();
-   }
-   else
-   {
-      MixerTrackCluster* pMixerTrackCluster;
-      FindMixerTrackCluster(pTrack, &pMixerTrackCluster);
-      if (pMixerTrackCluster)
-         pMixerTrackCluster->UpdateMute();
-   }
-}
-
-void MixerBoard::UpdateSolo(const PlayableTrack* pTrack /*= NULL*/) // NULL means update for all tracks.
-{
-   if (pTrack == NULL)
-   {
-      for (unsigned int i = 0; i < mMixerTrackClusters.size(); i++)
-         mMixerTrackClusters[i]->UpdateSolo();
-   }
-   else
-   {
-      MixerTrackCluster* pMixerTrackCluster;
-      FindMixerTrackCluster(pTrack, &pMixerTrackCluster);
-      if (pMixerTrackCluster)
-         pMixerTrackCluster->UpdateSolo();
-   }
-}
-
-void MixerBoard::UpdatePan(const PlayableTrack* pTrack)
-{
-   if (pTrack == NULL)
-   {
-      for (unsigned int i = 0; i < mMixerTrackClusters.size(); i++)
-         mMixerTrackClusters[i]->UpdatePan();
-   }
-   else
-   {
-      MixerTrackCluster* pMixerTrackCluster;
-      FindMixerTrackCluster(pTrack, &pMixerTrackCluster);
-      if (pMixerTrackCluster)
-         pMixerTrackCluster->UpdatePan();
-   }
-}
-
-void MixerBoard::UpdateGain(const PlayableTrack* pTrack)
-{
-   MixerTrackCluster* pMixerTrackCluster;
-   FindMixerTrackCluster(pTrack, &pMixerTrackCluster);
-   if (pMixerTrackCluster)
-      pMixerTrackCluster->UpdateGain();
-}
-
-#ifdef EXPERIMENTAL_MIDI_OUT
-void MixerBoard::UpdateVelocity(const PlayableTrack* pTrack)
-{
-   MixerTrackCluster* pMixerTrackCluster;
-   FindMixerTrackCluster(pTrack, &pMixerTrackCluster);
-   if (pMixerTrackCluster)
-      pMixerTrackCluster->UpdateVelocity();
-}
-#endif
-
 void MixerBoard::UpdateMeters(const double t1, const bool bLoopedPlay)
 {
    if (!this->IsShown() || (t1 == BAD_STREAM_TIME))
diff --git a/src/MixerBoard.h b/src/MixerBoard.h
index 1da2332af..8cda8cc1c 100644
--- a/src/MixerBoard.h
+++ b/src/MixerBoard.h
@@ -98,16 +98,7 @@ public:
 
    void ResetMeter(const bool bResetClipping);
 
-   // These are used by TrackPanel for synchronizing control states.
-   void UpdateForStateChange(); // Update the controls that can be affected by state change.
-   void UpdateName();
-   void UpdateMute();
-   void UpdateSolo();
-   void UpdatePan();
-   void UpdateGain();
-#ifdef EXPERIMENTAL_MIDI_OUT
-   void UpdateVelocity();
-#endif
+   void UpdateForStateChange();
    void UpdateMeter(const double t0, const double t1);
 
 private:
@@ -225,15 +216,6 @@ public:
 
    void ResetMeters(const bool bResetClipping);
 
-   void UpdateName(const PlayableTrack* pTrack);
-   void UpdateMute(const PlayableTrack* pTrack = NULL); // NULL means update for all tracks.
-   void UpdateSolo(const PlayableTrack* pTrack = NULL); // NULL means update for all tracks.
-   void UpdatePan(const PlayableTrack* pTrack = NULL); // NULL means update for all tracks.
-   void UpdateGain(const PlayableTrack* pTrack);
-#ifdef EXPERIMENTAL_MIDI_OUT
-   void UpdateVelocity(const PlayableTrack* pTrack);
-#endif
-
    void UpdateMeters(const double t1, const bool bLoopedPlay);
 
    void UpdateWidth();
@@ -254,7 +236,6 @@ private:
    void OnTrackSetChanged(wxEvent &event);
    void OnTrackChanged(TrackListEvent &event);
 
-
 public:
    // mute & solo button images: Create once and store on MixerBoard for use in all MixerTrackClusters.
    std::unique_ptr<wxImage> mImageMuteUp, mImageMuteOver, mImageMuteDown,
diff --git a/src/Project.cpp b/src/Project.cpp
index 22bf10cf7..c555e38b7 100644
--- a/src/Project.cpp
+++ b/src/Project.cpp
@@ -5524,14 +5524,6 @@ void AudacityProject::DoTrackMute(Track *t, bool exclusive)
 {
    HandleTrackMute(t, exclusive);
 
-   // Update mixer board, too.
-   MixerBoard* pMixerBoard = this->GetMixerBoard();
-   if (pMixerBoard)
-   {
-      pMixerBoard->UpdateMute(); // Update for all tracks.
-      pMixerBoard->UpdateSolo(); // Update for all tracks.
-   }
-
    mTrackPanel->UpdateAccessibility();
    mTrackPanel->Refresh(false);
 }
@@ -5540,14 +5532,6 @@ void AudacityProject::DoTrackSolo(Track *t, bool exclusive)
 {
    HandleTrackSolo(t, exclusive);
 
-   // Update mixer board, too.
-   MixerBoard* pMixerBoard = this->GetMixerBoard();
-   if (pMixerBoard)
-   {
-      pMixerBoard->UpdateMute(); // Update for all tracks.
-      pMixerBoard->UpdateSolo(); // Update for all tracks.
-   }
-
    mTrackPanel->UpdateAccessibility();
    mTrackPanel->Refresh(false);
 }
diff --git a/src/menus/TrackMenus.cpp b/src/menus/TrackMenus.cpp
index 7ac2122c1..0795c233d 100644
--- a/src/menus/TrackMenus.cpp
+++ b/src/menus/TrackMenus.cpp
@@ -3,7 +3,7 @@
 #include "../LabelTrack.h"
 #include "../Menus.h"
 #include "../Mix.h"
-#include "../MixerBoard.h"
+
 #include "../Prefs.h"
 #include "../Project.h"
 #include "../ShuttleGui.h"
@@ -13,6 +13,7 @@
 #include "../WaveTrack.h"
 #include "../commands/CommandContext.h"
 #include "../commands/CommandManager.h"
+#include "../widgets/ASlider.h"
 
 #include <wx/combobox.h>
 
@@ -103,7 +104,6 @@ void DoMixAndRender
 void DoPanTracks(AudacityProject &project, float PanValue)
 {
    auto tracks = project.GetTracks();
-   auto mixerBoard = project.GetMixerBoard();
 
    // count selected wave tracks
    const auto range = tracks->Any< WaveTrack >();
@@ -115,8 +115,6 @@ void DoPanTracks(AudacityProject &project, float PanValue)
       left->SetPan( PanValue );
 
    project.RedrawProject();
-   if (mixerBoard)
-      mixerBoard->UpdatePan();
 
    auto flags = UndoPush::AUTOSAVE;
    /*i18n-hint: One or more audio tracks have been panned*/
@@ -832,7 +830,6 @@ void OnMuteAllTracks(const CommandContext &context)
    auto tracks = project.GetTracks();
    auto soloSimple = project.IsSoloSimple();
    auto soloNone = project.IsSoloNone();
-   auto mixerBoard = project.GetMixerBoard();
 
    for (auto pt : tracks->Any<PlayableTrack>())
    {
@@ -843,11 +840,6 @@ void OnMuteAllTracks(const CommandContext &context)
 
    project.ModifyState(true);
    project.RedrawProject();
-   if (mixerBoard) {
-      mixerBoard->UpdateMute();
-      if (soloSimple || soloNone)
-         mixerBoard->UpdateSolo();
-   }
 }
 
 void OnUnmuteAllTracks(const CommandContext &context)
@@ -856,7 +848,6 @@ void OnUnmuteAllTracks(const CommandContext &context)
    auto tracks = project.GetTracks();
    auto soloSimple = project.IsSoloSimple();
    auto soloNone = project.IsSoloNone();
-   auto mixerBoard = project.GetMixerBoard();
 
    for (auto pt : tracks->Any<PlayableTrack>())
    {
@@ -867,11 +858,6 @@ void OnUnmuteAllTracks(const CommandContext &context)
 
    project.ModifyState(true);
    project.RedrawProject();
-   if (mixerBoard) {
-      mixerBoard->UpdateMute();
-      if (soloSimple || soloNone)
-         mixerBoard->UpdateSolo();
-   }
 }
 
 void OnPanLeft(const CommandContext &context)
diff --git a/src/tracks/playabletrack/notetrack/ui/NoteTrackSliderHandles.cpp b/src/tracks/playabletrack/notetrack/ui/NoteTrackSliderHandles.cpp
index f82bab18b..7e1fecfe9 100644
--- a/src/tracks/playabletrack/notetrack/ui/NoteTrackSliderHandles.cpp
+++ b/src/tracks/playabletrack/notetrack/ui/NoteTrackSliderHandles.cpp
@@ -14,7 +14,6 @@
 #ifdef EXPERIMENTAL_MIDI_OUT
 
 #include "../../../../HitTestResult.h"
-#include "../../../../MixerBoard.h"
 #include "../../../../Project.h"
 #include "../../../../RefreshCode.h"
 #include "../../../../TrackPanel.h" // for TrackInfo
@@ -51,10 +50,6 @@ UIHandle::Result VelocitySliderHandle::SetValue
 
    if (pTrack) {
       pTrack->SetVelocity(newValue);
-
-      MixerBoard *const pMixerBoard = pProject->GetMixerBoard();
-      if (pMixerBoard)
-         pMixerBoard->UpdateVelocity(pTrack.get());
    }
 
    return RefreshCode::RefreshCell;
diff --git a/src/tracks/playabletrack/wavetrack/ui/WaveTrackSliderHandles.cpp b/src/tracks/playabletrack/wavetrack/ui/WaveTrackSliderHandles.cpp
index 11901afad..722c157ff 100644
--- a/src/tracks/playabletrack/wavetrack/ui/WaveTrackSliderHandles.cpp
+++ b/src/tracks/playabletrack/wavetrack/ui/WaveTrackSliderHandles.cpp
@@ -12,7 +12,6 @@ Paul Licameli split from TrackPanel.cpp
 #include "WaveTrackSliderHandles.h"
 
 #include "../../../../HitTestResult.h"
-#include "../../../../MixerBoard.h"
 #include "../../../../Project.h"
 #include "../../../../RefreshCode.h"
 #include "../../../../TrackPanel.h"
@@ -50,10 +49,6 @@ UIHandle::Result GainSliderHandle::SetValue
       for (auto channel :
            TrackList::Channels(pTrack.get()))
          channel->SetGain(newValue);
-
-      MixerBoard *const pMixerBoard = pProject->GetMixerBoard();
-      if (pMixerBoard)
-         pMixerBoard->UpdateGain(pTrack.get());
    }
 
    return RefreshCode::RefreshNone;
@@ -131,10 +126,6 @@ UIHandle::Result PanSliderHandle::SetValue(AudacityProject *pProject, float newV
       for (auto channel :
            TrackList::Channels(pTrack.get()))
          channel->SetPan(newValue);
-
-      MixerBoard *const pMixerBoard = pProject->GetMixerBoard();
-      if (pMixerBoard)
-         pMixerBoard->UpdatePan(pTrack.get());
    }
 
    return result;
diff --git a/src/tracks/ui/TrackControls.cpp b/src/tracks/ui/TrackControls.cpp
index b57cb65b8..572bcce7b 100644
--- a/src/tracks/ui/TrackControls.cpp
+++ b/src/tracks/ui/TrackControls.cpp
@@ -15,7 +15,6 @@ Paul Licameli split from TrackPanel.cpp
 #include "../../HitTestResult.h"
 #include "../../RefreshCode.h"
 #include "../../Menus.h"
-#include "../../MixerBoard.h"
 #include "../../Project.h"
 #include "../../TrackPanel.h" // for TrackInfo
 #include "../../TrackPanelMouseEvent.h"
@@ -214,11 +213,6 @@ void TrackMenuTable::OnSetName(wxCommandEvent &)
          for (auto channel : TrackList::Channels(pTrack))
             channel->SetName(newName);
 
-         MixerBoard *const pMixerBoard = proj->GetMixerBoard();
-         auto pt = dynamic_cast<PlayableTrack*>(pTrack);
-         if (pt && pMixerBoard)
-            pMixerBoard->UpdateName(pt);
-
          proj->PushState(wxString::Format(_("Renamed '%s' to '%s'"),
             oldName,
             newName),