diff --git a/src/midisequencer.cpp b/src/midisequencer.cpp
--- a/src/midisequencer.cpp
+++ b/src/midisequencer.cpp
@@ -235,6 +235,8 @@
 void MidiSequencer::setTempoFactor(unsigned int value)
 {
     float tempoFactor = (value*value + 100.0*value + 20000.0) / 40000.0;
+    m_midiSequencerOutputThread->setTempoFactor(tempoFactor);
+
     drumstick::QueueTempo queueTempo = m_queue->getTempo();
     queueTempo.setTempoFactor(tempoFactor);
     m_queue->setTempo(queueTempo);
diff --git a/src/midisequenceroutputthread.h b/src/midisequenceroutputthread.h
--- a/src/midisequenceroutputthread.h
+++ b/src/midisequenceroutputthread.h
@@ -48,6 +48,7 @@
     void setVolumeFactor(unsigned int vol);
     void setPitchShift(int value);
     void setPosition(unsigned int pos);
+    void setTempoFactor(float value);
     void resetPosition();
 
 Q_SIGNALS:
@@ -65,6 +66,7 @@
     int m_volume[MIDI_CHANNELS];
     unsigned int m_volumeFactor;
     int m_pitchShift;
+    float m_tempoFactor;
     QListIterator<drumstick::SequencerEvent *>* m_songIterator;
 };
 
diff --git a/src/midisequenceroutputthread.cpp b/src/midisequenceroutputthread.cpp
--- a/src/midisequenceroutputthread.cpp
+++ b/src/midisequenceroutputthread.cpp
@@ -36,6 +36,7 @@
     m_lastEvent(0), 
     m_volumeFactor(100),
     m_pitchShift(0),
+    m_tempoFactor(1.0),
     m_songIterator(0)
 {
     for (int chan = 0; chan < MIDI_CHANNELS; ++chan)
@@ -100,7 +101,7 @@
     drumstick::QueueTempo firstTempo = m_Queue->getTempo();
     firstTempo.setPPQ(m_song->division());
     firstTempo.setTempo(m_song->initialTempo());
-    firstTempo.setTempoFactor(1.0);
+    firstTempo.setTempoFactor(m_tempoFactor);
     m_Queue->setTempo(firstTempo);
 }
 
@@ -131,6 +132,11 @@
         start();
 }
 
+void MidiSequencerOutputThread::setTempoFactor(float value)
+{
+    m_tempoFactor = value;
+}
+
 void MidiSequencerOutputThread::setPosition(unsigned int pos)
 {
     m_songPosition = pos;