The technical history of modern harmony is a history of growth of toleration by the human ear of chords that at first sounded discordant and senseless to the main body of contemporary professional musicians.
The House
...She lays her beams in music,
In music everyone,
To the cadence of the whirling world
Which dances around the sun-
That so they shall not be displaced
By lapses or by wars,
But for the love of happy souls
Outlive the newest stars.
My people had used music to soothe slavery's torment or to propitiate God, or to describe the sweetness of love and the distress of lovelessness, but I knew no race could sing and dance its way to freedom.