def drawScreen(self):
self._pianoKeyboard = PianoKeyboard(0, 0)
(lowAorigin, lowAsize) = self._pianoKeyboard.getKeyBoundingBox(0)
(whiteKeyWidth, whiteKeyHeight) = lowAsize
lowAkeyCentre = lowAorigin[1] + whiteKeyHeight / 2.0
self._songScore = SongScore(whiteKeyWidth, 0, lowAkeyCentre,
whiteKeyHeight)
