You will recognize the old Shaker hymn "Simple Gifts" in John Williams "Air and Simple Gifts.  The words are to me profound and the tune never fails to prick my heart.  To juxtapose the essence of simplicity with the grandeur of the inauguration of our President makes it even more poignant.  Here from http://en.wikipedia.org/wiki/Simple_Gifts are the words:

'Tis the gift to be simple, 'tis the gift to be free,
'Tis the gift to come down where you ought to be,
And when we find ourselves in the place just right,
'Twill be in the valley of love and delight.

When true simplicity is gain'd,
To bow and to bend we shan't be asham'd,
To turn, turn will be our delight,
Till by turning, turning we come round right.