diff --git a/sound/gensound_temp/gensound_temp_2021_11_28__23_18_00_ojnjqtaw.wav b/sound/gensound_temp/gensound_temp_2021_11_28__23_18_00_ojnjqtaw.wav
new file mode 100644
index 0000000..4230823
Binary files /dev/null and b/sound/gensound_temp/gensound_temp_2021_11_28__23_18_00_ojnjqtaw.wav differ
diff --git a/sound/gensound_test.py b/sound/gensound_test.py
new file mode 100644
index 0000000..b36225d
--- /dev/null
+++ b/sound/gensound_test.py
@@ -0,0 +1,21 @@
+
+
+from gensound import Sine, Triangle, Square, Pan
+
+sig = Triangle # Sine? Square?
+
+beat = 0.5e3 # 120 bpm
+fermata = 0.1 # make fermatas in the melody slightly longer
+pause = 0.6 # and breathe for a moment before starting the next phrase
+
+S = sig(f"r D5 D=2 C#=1 B-13=2 A=1 D E=2 F#-13={2+fermata} r={pause} F#=1 F#=2 F#=1 E=2 F#-13=1 G F#-13=2 E={2+fermata} r={pause} "
+        f"D+16=1 E=2 F#-13=1 E=2 D+16=1 B-13 C#=2 D+9={2+fermata} r={pause} A'=1 F#-13=2 D+16=1 E=2 G=1 F#-13 E=2 D=3", beat)
+A = sig(f"r A4 B=2 A+16=1 G=2 F#-13=1 F# B-13 A A={2+fermata} r={pause} C#=1 B=2 B=1 B A A A D A A={2+fermata} r={pause} "
+        f"B=1 A=2 A=1 B-13 A=0.5 G F#=1 B-13 B A#-13 B={2+fermata} r={pause} A=1 A=2 B=1 A=2 A=1 A B-13 A F#-13=3", beat)
+T = sig(f"r F#4-13 F#=2 F#=1 D=2 D=1 D D C#-13 D={2+fermata} r={pause} C#=1 D+16=2 D+16=1 D C#-13 D E A, D C#-13={2+fermata} r={pause} "
+        f"F#=1 E=2 D=1 D C#-13 D+16 D G+5 F# F#={2+fermata} r={pause} E=1 F#-13=2 F#=1 E=2 C#-13=1 A B C#-13 D=3", beat)
+B = sig(f"r D3 B-16 D F# G B-13 D B-16 G A D,={2+fermata} r={pause} A#'-13=1 B=2 A=1 G#-13 A F#-13 C#-13 D F#-13 A={2+fermata} r={pause} "
+        f"B=1 C#-13=2 D=1 G, A B G E F# B,={2+fermata} r={pause} C#'-13=1 D C# B C#-13 B A D G, A D,=3", beat)
+
+chorale = S*Pan(25) + B*Pan(-25) + T*Pan(80) + A*Pan(-80) # position the voices in the stereo field
+chorale.play() # can you spot the parallel octaves?
diff --git a/tk_first_steps/toene_mvc.py b/tk_first_steps/toene_mvc.py
new file mode 100644
index 0000000..c72fdd7
--- /dev/null
+++ b/tk_first_steps/toene_mvc.py
@@ -0,0 +1,86 @@
+import tkinter as tk
+from gensound import Sine
+
+# Konstanten
+
+c5= 523
+b = 494
+a = 440
+g = 392
+f = 349
+e = 330
+d = 294
+c = 262
+
+
+# ------------------------------------
+
+# Melodie / Model
+
+class Melody():
+	def __init__(self, melody = "c,e,g,c5,g,e,c"):
+		self.melody = melody
+		
+	def play(self, duration = 0.5, amplitude = 0.5):
+		dur = duration * 1000
+		ampl = amplitude
+		
+		s =  Sine(frequency=440, duration=1)
+		
+		tone_list = self.melody.split(',')
+		for tone in tone_list:
+			if tone == "c5":
+				s = s | Sine(frequency=c5, duration=dur)*0.5
+			elif tone == "b":
+				s = s | Sine(frequency=b, duration=dur)*0.5
+			elif tone == "a":
+				s = s | Sine(frequency=a, duration=dur)*0.5
+			elif tone == "g":
+				s = s | Sine(frequency=g, duration=dur)*0.5
+			elif tone == "f":
+				s = s | Sine(frequency=f, duration=dur)*0.5
+			elif tone == "e":
+				s = s | Sine(frequency=e, duration=dur)*0.5
+			elif tone == "d":
+				s = s | Sine(frequency=d, duration=dur)*0.5
+			elif tone == "c":
+				s = s | Sine(frequency=c, duration=dur)*0.5
+			else:
+				pass
+		s.play()
+		return True
+
+# Controller
+
+class Controller():
+	def __init__(self):
+		self.m = Melody()
+
+	def ton(self):
+		m = self.m
+		m.play()
+# View
+
+class Application(tk.Frame):
+    def __init__(self, master=None):        
+        super().__init__(master)
+        self.pack()
+        self.create_widgets()
+
+    def create_widgets(self):
+        self.b1 = tk.Button(self)
+        self.b1["text"] = "Ton"
+        self.b1["command"] = con.ton
+        self.b1.pack(side="top")
+
+        self.quit = tk.Button(self, text="QUIT", fg="red",
+                              command=root.destroy)
+        self.quit.pack(side="bottom")
+
+
+# --- Ausführung ---
+
+root = tk.Tk()
+con = Controller()
+app = Application(master=root)
+app.mainloop()