Added music21 and csound examples

examples/csound/play_with_csound.py

@@ -0,0 +1,36 @@
+try:
+    import ctcsound
+except (ImportError,TypeError):
+    csound_imported = false
+    
+from ziffers import *
+
+if(csound_imported):
+
+    # Parse ziffers notation
+    parsed = zparse("w 0 1 q 0 1 2 3 r e 5 3 9 2 q r 0")
+
+    # Convert to csound score
+    score = to_csound_score(parsed, 180, 1500, "Meep")
+    
+    # Outputs: i {instrument} {start time} {duration} {amplitude} {pitch}
+    print(score)
+
+    orc = """
+    instr Meep
+        out(linen(oscili(p4,p5),0.1,p3,0.1))
+    endin
+    """
+
+    c = ctcsound.Csound()
+    c.setOption("-odac")  # Using SetOption() to configure Csound
+
+    c.compileOrc(orc)
+
+    c.readScore(score)
+      
+    c.start()                               
+    c.perform() 
+    c.stop()
+else:
+    print("Csound not found! First download from https://csound.com/ and add to PATH or PYENV (Windows path: C:\Program Files\Csound6_x64\bin). Then install ctcsound with 'pip install ctcsound'.")