diff --git a/MainWindow.cpp b/MainWindow.cpp
deleted file mode 100644
index dbd5f0d..0000000
--- a/MainWindow.cpp
+++ /dev/null
@@ -1,78 +0,0 @@
-#include "MainWindow.h"
-#include <vector>
-#include <QTimer>
-
-#include <QString>
-#include <string>
-#include <QDebug>
-
-MainWindow::MainWindow(QWidget *parent)
-    : QMainWindow(parent)
-{
-    tabWidget = new QTabWidget(this);
-
-    pianoKeyBoard = new PianoKeyBoard(-350, 175, 700, 500, this);
-    circleOfFifths = new CircleOfFifths(-250, 0, 500, 500, this);
-    scene_Demo = new QGraphicsScene(-250,0,500,500, this);
-
-    gV_Keyboard = new QGraphicsView(pianoKeyBoard, tabWidget);
-    gV_CircleOfFifths = new QGraphicsView(circleOfFifths, tabWidget);
-    gV_Demo = new QGraphicsView(scene_Demo, tabWidget);
-    midiLog = new QPlainTextEdit();
-
-
-    tabWidget->addTab(gV_Keyboard, "Keyboard");
-    tabWidget->addTab(gV_CircleOfFifths, "Circle of Fifths");
-    tabWidget->addTab(gV_Demo, "Lightshow Demonstration");
-    tabWidget->addTab(midiLog, "Midi Messages Log");
-
-    setCentralWidget(tabWidget);
-    midiPiano = new MidiListener;
-
-    midiPiano->moveToThread(&midiThread);
-
-    connect(this, &MainWindow::stopMidi, midiPiano, &MidiListener::stop);
-    // Wenn THIS das signal "startMidiListener" abgibt, wird Slot midiPiano->start ausgeführt
-    connect(this, &MainWindow::startMidiListener, midiPiano, &MidiListener::start);
-    connect(this, &MainWindow::nextMidiMessage, midiPiano, &MidiListener::listen);
-    // Wenn midiPiano das signal "newMidiMessage" abgibt, wird this.handlemidimessage ausgeführt
-    connect(midiPiano, &MidiListener::newMidiMessage, this, &MainWindow::handleMidiMessage);
-    midiThread.start();
-    MidiProbe * probe = new MidiProbe();
-    emit startMidiListener(probe->getPort());
-
-}
-
-void MainWindow::lightShowDemonstration(int b1, int b2, int b3)
-{
-    if(b1==0x90)
-    {
-        if(b2>108 || b2<21) return;     //no valid piano-key
-        scene_Demo->setBackgroundBrush(colorScale.getToneByKeyboardPosition(b2)->getColor());
-    }
-    else if(b1==0x80)
-    {
-        if(b2>108 || b2<21) return;     //no valid piano key
-        if(scene_Demo->backgroundBrush().color() == colorScale.getToneByKeyboardPosition(b2)->getColor())   //only reset color if current color still is same tone
-            scene_Demo->setBackgroundBrush(Qt::white);
-    }
-
-}
-
-void MainWindow::handleMidiMessage(int b1, int b2, int b3){
-    if(b1 != 0)
-    {
-        midiLog->appendPlainText(QString::asprintf("Byte 1: %x, Byte 2: %x, Byte 3: %x", b1, b2, b3));
-        lightShowDemonstration(b1, b2, b3);
-    }
-    midiThread.msleep(10);
-    emit nextMidiMessage();
-}
-
-MainWindow::~MainWindow()
-{
-    emit stopMidi();
-    midiThread.quit();
-    midiThread.wait();
-}
-