diff --git a/libs/ardour/ardour/vestige/aeffectx.h b/libs/ardour/ardour/vestige/aeffectx.h
index 5238df1c75..2fb7df9065 100644
--- a/libs/ardour/ardour/vestige/aeffectx.h
+++ b/libs/ardour/ardour/vestige/aeffectx.h
@@ -250,27 +250,26 @@ struct _AEffect
 
 typedef struct _AEffect AEffect;
 
-struct _VstTimeInfo
+typedef struct _VstTimeInfo
 {
-	// 00
-	double samplePos;
-	// 08
-	double sampleRate;
-	// unconfirmed 10 18
-	char empty1[8 + 8];
-	// 20?
-	double tempo;
-	// unconfirmed 28 30 38
-	char empty2[8 + 8 + 8];
-	// 40?
-	int timeSigNumerator;
-	// 44?
-	int timeSigDenominator;
-	// unconfirmed 48 4c 50
-	char empty3[4 + 4 + 4];
-	// 54
-	int flags;
-};
+    /* info from online documentation of VST provided by Steinberg */
+
+    double samplePos;
+    double sampleRate;
+    double nanoSeconds;
+    double ppqPos;
+    double tempo;
+    double barStartPos;
+    double cycleStartPos;
+    double cycleEndPos;
+    int32_t   timeSigNumerator;
+    int32_t   timeSigDenominator;
+    int32_t   smpteOffset;
+    int32_t   smpteFrameRate;
+    int32_t   samplesToNextClock;
+    int32_t   flags;
+
+} VstTimeInfo;
 
 typedef struct _VstTimeInfo VstTimeInfo;
 
diff --git a/libs/ardour/session_vst.cc b/libs/ardour/session_vst.cc
index 06a6b80e99..b2e9b14c1a 100644
--- a/libs/ardour/session_vst.cc
+++ b/libs/ardour/session_vst.cc
@@ -131,21 +131,56 @@ intptr_t Session::vst_callback (
 		// conversions
 		memset(&_timeInfo, 0, sizeof(_timeInfo));
 		if (session) {
-			_timeInfo.samplePos = session->transport_frame();
+			framepos_t now = session->transport_frame();
+			_timeInfo.samplePos = now;
 			_timeInfo.sampleRate = session->frame_rate();
 			_timeInfo.flags = 0;
 
+			const TempoMetric& tm (session->tempo_map().metric_at (now));
+
 			if (value & (kVstTempoValid)) {
-				const Tempo& t (session->tempo_map().tempo_at (session->transport_frame()));
+				const Tempo& t (tm.tempo());
 				_timeInfo.tempo = t.beats_per_minute ();
 				_timeInfo.flags |= (kVstTempoValid);
 			}
 			if (value & (kVstBarsValid)) {
-				const Meter& m (session->tempo_map().meter_at (session->transport_frame()));
+				const Meter& m (tm.meter());
 				_timeInfo.timeSigNumerator = m.divisions_per_bar ();
 				_timeInfo.timeSigDenominator = m.note_divisor ();
 				_timeInfo.flags |= (kVstBarsValid);
 			}
+			if (value & (kVstPpqPosValid)) {
+				Timecode::BBT_Time bbt;
+				try {
+					session->tempo_map().bbt_time_rt (now, bbt);
+					
+					/* Note that this assumes constant
+					   meter/tempo throughout the session. We
+					   can do better than this, because
+					   progressive rock fans demand it.
+					*/
+					double ppqBar = double(bbt.bars - 1) * tm.meter().divisions_per_bar();
+					double ppqBeat = double(bbt.beats - 1);
+					double ppqTick = double(bbt.ticks) / Timecode::BBT_Time::ticks_per_beat;
+					// PPQ Pos
+					_timeInfo.ppqPos = ppqBar + ppqBeat + ppqTick;
+					_timeInfo.flags |= (kVstPpqPosValid);
+				} catch (...) {
+					/* relax */
+				}
+			}
+
+			_timeInfo.tempo = tm.tempo().beats_per_minute();
+			_timeInfo.flags |= kVstTempoValid;
+			
+			// Bars
+			// _timeInfo.barStartPos = ppqBar;
+			// _timeInfo.flags |= kVstBarsValid;
+			
+			// Time Signature
+			_timeInfo.timeSigNumerator = tm.meter().divisions_per_bar();
+			_timeInfo.timeSigDenominator = tm.meter().note_divisor();
+			_timeInfo.flags |= kVstTimeSigValid;
 
 			if (session->transport_speed() != 0.0f) {
 				_timeInfo.flags |= kVstTransportPlaying;