+from kivy.lang import Builder
+from music_sampler.key import Key
+from music_sampler.mapping import Mapping
+
+music_sampler.register_fonts()
+
+class KeyList(RelativeLayout):
+ keylist = ListProperty([])
+ first_key = StringProperty("")
+ second_key = StringProperty("")
+ third_key = StringProperty("")
+
+ def append(self, value):
+ self.keylist.insert(0, value)