1 files changed, 4 insertions, 0 deletions
diff --git a/nutemp/t.h b/nutemp/t.h
index be54c136ba..b734dcead8 100644
--- a/nutemp/t.h
+++ b/nutemp/t.h
@@ -9,6 +9,8 @@
 
 #include <glibmm/threads.h>
 
+#include "pbd/signals.h"
+
 #include "evoral/Beats.hpp"
 
 #include "ardour/ardour.h"
@@ -361,6 +363,8 @@ class LIBARDOUR_API TempoMap
 	void dump (std::ostream&);
 	void rebuild (superclock_t limit);
 
+	PBD::Signal2<void,superclock_t,superclock_t> Changed;
+
    private:
 	TempoMapPoints _points;
 	framecnt_t     _sample_rate;