diff --git a/MainWindow.h b/MainWindow.h
deleted file mode 100644
index 5872cbc..0000000
--- a/MainWindow.h
+++ /dev/null
@@ -1,70 +0,0 @@
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
-
-#include <QMainWindow>
-#include <QGraphicsView>
-/* MAINWINDOW_H
- * CLASS DECLARATION
- *
- * CHANGLOG:
- * NAME:            |   CHANGES:                                                |   DATE:           |
- * Mewes, Lars      | Neuerstellung                                             | 24.09.2021        |
- * Mewes, Lars      | Änderung auf QTabWidget (statt QSplitter) + Midi-Versuche | 28.09.2021        |
- *                  |                                                           |                   |
- *                  |                                                           |                   |
- *
- * DESCRIPTION:
- * Diese Klasse ist die "Hauptklasse" und besitzt die Farbtonskala "ColorScale", die QGraphicsViews sowie die Klaviatur und den Quintenzirkel
- *
- * TO-DOs:
- *
- *
- */
-
-#include <QGraphicsScene>
-#include <QTabWidget>
-#include <QPlainTextEdit>
-#include <QThread>
-
-#include "RtMidi.h"
-
-#include "MidiListener.h"
-#include "PianoKeyBoard.h"
-#include "Tone.h"
-#include "ColorScale.h"
-#include "CircleOfFifths.h"
-#include "MidiProbe.h"
-
-class MainWindow : public QMainWindow
-{
-    Q_OBJECT
-    QTabWidget * tabWidget;
-
-    QGraphicsView * gV_Keyboard;
-    QGraphicsView * gV_CircleOfFifths;
-    QGraphicsView * gV_Demo;
-    QPlainTextEdit * midiLog;
-
-    PianoKeyBoard * pianoKeyBoard;
-    CircleOfFifths * circleOfFifths;
-    QGraphicsScene * scene_Demo;
-
-    QThread midiThread;
-    MidiListener * midiPiano;
-    void lightShowDemonstration(int b1, int b2, int b3);
-public slots:
-
-    void handleMidiMessage(int b1, int b2, int b3);
-signals:
-    void startMidiListener(int Port = 1);
-    void nextMidiMessage();
-    void stopMidi();
-public:
-
-    RtMidiIn * midiin = nullptr;
-    MainWindow(QWidget *parent = nullptr);
-    virtual ~MainWindow();
-
-    ColorScale colorScale;
-};
-#endif // MAINWINDOW_H