Rock ’n roll is really swing with a modern name. It began on the levees and plantations, took in folk songs, and features blues and rhythm. It's the rhythm that gets to the kids – they're starved of music they can dance to, after all those years of crooners.
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.
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.
Sweet is every sound, Sweeter thy voice, but every sound is sweet; Myriads of rivulets hurrying thro' the lawn, The moans of doves in immemorial elms, And murmuring of innumerable bees.