mainPane.add(panel);
practicePanel = new TrebleBassStaff();
sightReadPanel = new TrebleBassStaff();
accuracyPanel = new AccuracyPanel();
noteSelectionPanel = new NoteSelectionPanel();
octaveSelectionPanel = new OctaveSelectionPanel();
srPanel = new JPanel();
srPanel.setLayout(new BoxLayout(srPanel, BoxLayout.X_AXIS));