private void SetPositionInSongInMillis(double positionInSongInMillis)
{
float x = (float)noteArea.GetHorizontalPositionForMillis(positionInSongInMillis);
rectTransform.anchorMin = new Vector2(x, 0);
rectTransform.anchorMax = new Vector2(x, 1);
rectTransform.anchoredPosition = Vector2.zero;
rectTransform.sizeDelta = new Vector2(rectTransform.sizeDelta.x, 0);
}