Aggiunto song.py

diff --git a/song.py b/song.py
new file mode 100644
index 0000000..66a48cf
--- /dev/null
+++ b/song.py
@@ -0,0 +1,78 @@
+## Object song
+
+class chorus():
+    def __init__(self):
+        self.body = ""
+
+    def content(self):
+        return self.body
+
+    def is_chorus(self):
+        return True
+
+class verse():
+    def __init__(self):
+        self.body = ""
+
+    def content(self):
+        return self.body
+
+    def is_chorus(self):
+        return False
+
+class song():
+
+    def __init__(self, newtitle):
+        # Initialize vars..
+        self.title = newtitle
+        # Body is an array of string with verses and
+        # chorus to be understood with __structure
+        self.body = []
+
+        self.mauthor = "Unknown"
+        self.tauthor = "Unknown"
+        self.tone = "Unknown"
+        self.year = "Unknown"
+
+        # Structure is an array of the type 'c' 'v'
+        # where c means Chorus, v means Verse
+        self.structure = []
+
+
+    # Gives the number of chorus in the song
+    def n_chorus(self):
+        count = 0
+        for item in self.structure:
+            if(item == 'c'):
+                count += 1
+        return count
+
+    # Gives the number of verse in the song
+    def n_verse(self):
+        count = 0
+        for item in self.structure:
+            if(item == 'v'):
+                count += 1
+        return count
+
+    def is_chorus(self, n):
+        if(self.structure[n] == 'c'):
+            return 1
+        return 0
+
+    def is_verse(self, n):
+        if(self.structure[n] == 'v'):
+            return 1
+        return 0
+
+    def add_chorus(self, t_chorus):
+        newchorus = chorus()
+        newchorus.body = t_chorus
+        self.body.append(newchorus)
+        self.structure.append('c')
+
+    def add_verse(self, t_verse):
+        newverse = verse()
+        newverse.body = t_verse
+        self.body.append(newverse)
+        self.structure.append('v')