Whitman describes hearing Italian opera drifting through the Dakota landscape at sunset. Flutes and cornets cut through the evening air, mingling with the rocks, woods, and the routines of frontier forts—sentries pacing, cannons silent. The music feels both jarringly artificial and strangely at home, as if arias from *La Sonnambula*, *Norma*, and *Poliuto* have always belonged to this vast, untamed space. The speaker senses an unexpected harmony: these civilized strains, normally confined to ornate city halls, somehow resonate more deeply out here, bathed in the last slanting yellow light.
The mood is one of hushed wonder. Rather than clashing with the wild, the music slips into it, and Nature itself is personified as a hidden, barbaric sovereign who listens, well pleased. There’s a quiet joy in recognizing a connection so profound that even the most artificial art can feel like a native bloom from ancient, gnarled roots.