diff --git a/src/gui/model/project.cpp b/src/gui/model/project.cpp
index 843351cc3..cc7dd6b84 100644
--- a/src/gui/model/project.cpp
+++ b/src/gui/model/project.cpp
@@ -43,7 +43,7 @@ Project::~Project()
 
 }
 
-const std::list< shared_ptr<Sequence> >&
+lumiera::observable_list< boost::shared_ptr<Sequence> >&
 Project::get_sequences()
 {
   return sequences;
@@ -55,14 +55,6 @@ Project::add_new_sequence(Glib::ustring name)
   shared_ptr<Sequence> sequence(new Sequence());
   sequence->set_name(name);
   sequences.push_back(sequence);
-  sequenceListChangedSignal.emit();
-
-}
-
-sigc::signal<void>&
-Project::signal_sequence_list_changed()
-{
-  return sequenceListChangedSignal;
 }
 
 }   // namespace model
diff --git a/src/gui/model/project.hpp b/src/gui/model/project.hpp
index cb7945204..c943496f4 100644
--- a/src/gui/model/project.hpp
+++ b/src/gui/model/project.hpp
@@ -28,6 +28,7 @@
 #define PROJECT_HPP
 
 #include "sequence.hpp"
+#include "../../common/observable-list.hpp"
 
 namespace gui {
 namespace model {
@@ -39,18 +40,14 @@ public:
   
   ~Project();
     
-  const std::list< boost::shared_ptr<Sequence> >& get_sequences();
+  lumiera::observable_list< boost::shared_ptr<Sequence> >&
+    get_sequences();
   
   void add_new_sequence(Glib::ustring name);
   
-public:
-  sigc::signal<void>& signal_sequence_list_changed();
-  
 private:
 
-  std::list< boost::shared_ptr<Sequence> > sequences;
-  
-  sigc::signal<void> sequenceListChangedSignal;
+  lumiera::observable_list< boost::shared_ptr<Sequence> > sequences;
 };
 
 }   // namespace model
diff --git a/src/gui/panels/timeline-panel.cpp b/src/gui/panels/timeline-panel.cpp
index dca7df7d5..9572ae8e6 100644
--- a/src/gui/panels/timeline-panel.cpp
+++ b/src/gui/panels/timeline-panel.cpp
@@ -65,7 +65,7 @@ TimelinePanel::TimelinePanel(model::Project *const owner_project) :
   //  mem_fun(this, &TimelinePanel::on_playback_period_drag_released));
   
   // Hook up notifications
-  project->signal_sequence_list_changed().connect(
+  project->get_sequences().signal_changed().connect(
     mem_fun(this, &TimelinePanel::on_sequence_list_changed));
   
   // Setup the notebook