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Video source: Barbershop Harmony Society

PITTSBURGH, PA. — The barbershop quartet Main Street performed a medley of modern songs, they say will be “good old songs” 20 years from now, at the Barbershop Harmony Society 2015 International Convention.

The medley includes “Gagnam Style,” “All About That Bass” and “Uptown Funk” and an original song about how those songs will be seen in the future.

Source: Laughing Squid