The Mexican–US War ends with the top half of Mexico – and its people – subsumed into the voracious US empire. A new musical genre – the Corrido – emerges from the new borderlands. The California Gold Rush produces a wealth of song from as far east as Scandinavia and as far west as China. US nativists sing against the arriving Germans and Irish Catholics, but they reserve their greatest musical venom for the Chinese in the form of the “John Chinaman” minstrel stereotype. Against such vicious representations, we have the Songs of Gold Mountain to reflect the true humanity of Chinese immigrants. In the wake of the Seneca Falls Convention, songs of women’s suffrage resound across the landscape, including those of Sojourner Truth. The Hutchinson Family Singers become the first US “supergroup” with their abolition songs, and Black challenges to the minstrelsy of E. P. Christy, Stephen Foster, and others continue, not only through the oratory of Frederick Douglass and songs of the Underground Railroad, but also through the operatic accomplishments of Elizabeth Taylor Greenfield.As the country careens toward the irrepressible schism of civil war, song becomes a highly supercharged, sectional arena.