private void UpdateScoreDisplay(object sender, EventArgs e)
{
try {
ScoreDisplay.Header = string.Format("{0}/{1} NOTES CORRECT ~ {2}", score.i_NumNotesScored,
midiPlayer.NumChannelNotesPlayed,
score.ScoreGrade(midiPlayer.NumChannelNotesPlayed));
ScoreDisplay.Width = Double.NaN;
} catch (NullReferenceException ex) { }
}