diff --git a/include/note_play_handle.h b/include/note_play_handle.h
index 186ada814..a80eda9b5 100644
--- a/include/note_play_handle.h
+++ b/include/note_play_handle.h
@@ -2,7 +2,7 @@
  * note_play_handle.h - declaration of class notePlayHandle which is needed
  *                      by LMMS-Play-Engine
  *
- * Copyright (c) 2004-2010 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2004-2012 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  * 
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
@@ -192,6 +192,16 @@ public:
 	void processMidiTime( const midiTime & _time );
 	void resize( const bpm_t _new_tempo );
 
+	void setSongGlobalParentOffset( const midiTime &offset )
+	{
+		m_songGlobalParentOffset = offset;
+	}
+
+	const midiTime &songGlobalParentOffset() const
+	{
+		return m_songGlobalParentOffset;
+	}
+
 #ifdef LMMS_SINGERBOT_SUPPORT
 	int patternIndex()
 	{
@@ -263,6 +273,7 @@ private:
 	float m_unpitchedFrequency;
 
 	BaseDetuning * m_baseDetuning;
+	midiTime m_songGlobalParentOffset;
 
 } ;
 
diff --git a/src/core/note_play_handle.cpp b/src/core/note_play_handle.cpp
index 1d6c8f476..a94a9eca4 100644
--- a/src/core/note_play_handle.cpp
+++ b/src/core/note_play_handle.cpp
@@ -2,7 +2,7 @@
  * note_play_handle.cpp - implementation of class notePlayHandle, part of
  *                        rendering engine
  *
- * Copyright (c) 2004-2010 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2004-2012 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  *
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
@@ -70,7 +70,11 @@ notePlayHandle::notePlayHandle( InstrumentTrack * _it,
 	m_patternIndex( 0 ),
 #endif
 	m_origTempo( engine::getSong()->getTempo() ),
-	m_origBaseNote( instrumentTrack()->baseNoteModel()->value() )
+	m_origBaseNote( instrumentTrack()->baseNoteModel()->value() ),
+	m_frequency( 0 ),
+	m_unpitchedFrequency( 0 ),
+	m_baseDetuning( NULL ),
+	m_songGlobalParentOffset( 0 )
 {
 	if( isTopNote() )
 	{
@@ -496,10 +500,10 @@ void notePlayHandle::updateFrequency()
 
 void notePlayHandle::processMidiTime( const midiTime & _time )
 {
-	if( _time >= pos() )
+	if( _time >= songGlobalParentOffset()+pos() )
 	{
 		const float v = detuning()->automationPattern()->
-						valueAt( _time - pos() );
+						valueAt( _time - songGlobalParentOffset() - pos() );
 		if( !typeInfo<float>::isEqual( v, m_baseDetuning->value() ) )
 		{
 			m_baseDetuning->setValue( v );
diff --git a/src/tracks/InstrumentTrack.cpp b/src/tracks/InstrumentTrack.cpp
index 59b4f744f..bfbad257e 100644
--- a/src/tracks/InstrumentTrack.cpp
+++ b/src/tracks/InstrumentTrack.cpp
@@ -2,7 +2,7 @@
  * InstrumentTrack.cpp - implementation of instrument-track-class
  *                        (window + data-structures)
  *
- * Copyright (c) 2004-2011 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ * Copyright (c) 2004-2012 Tobias Doerffel <tobydox/at/users.sourceforge.net>
  *
  * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
  *
@@ -672,6 +672,14 @@ bool InstrumentTrack::play( const midiTime & _start,
 								note_frames,
 								*cur_note );
 				note_play_handle->setBBTrack( bb_track );
+				// are we playing global song?
+				if( _tco_num < 0 )
+				{
+					// then set song-global offset of pattern in order to
+					// properly perform the note detuning
+					note_play_handle->setSongGlobalParentOffset( p->startPosition() );
+				}
+
 #if LMMS_SINGERBOT_SUPPORT
 				note_play_handle->setPatternIndex( note_idx );
 #endif