playMode = PLAYING_MODES_DICT[playMode]
song = musicXml2Song(songFile)
bank, preset = instrumentDescription['bank'], instrumentDescription['preset']
+ octave = instrumentDescription.get('octave', 0)
+ synth.adjust_octave(0, octave)
synth.program_select(0, bank, preset)
playingScreen = SongPlayingScreen(synth, song, mode=playMode)
playingScreen.run()