Will be out of vogue!
Then what of the national throat? Will it not weaken? What of the national chest? Will it not shrink?

from John Philip Sousa – The Menace of Mechanical Music Lyrics on Rap Genius

Meaning

John Philip Sousa — great composer, lousy predictor of the future of the music business. American music only became the most popular in the world in the era of recorded music — way more popular than in Sousa’s era

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