The burden of a song; the chorus; the refrain. (noun)
Accompanying strain; subordinate and underlying meaning; accompaniment; undertone. (noun)
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Use "undersong" in a sentence
"Whether he truly registers, or can register, having been elsewhere, the subtle "undersong" of this country."
"Again, one would have to be very literal-minded indeed not to hear the delicious irony that is Kate's undersong, centered on the great line "I am asham'd that women are so simple.""
"For a more brutal sense of what is at stake in these overlapping materials, contexts, and drafts, where -- with Shelley so often providing the stated melody or haunting undersong -- Brecht undertakes to write alternately despairing and enraged elegy, see Brecht's seven stark, ultimately-discarded lines from the first sketch of "Die Verlustliste""