The a cappella group Pentatonix (previously) sing a medley of familiar songs that span centuries. It’s heavy on music from the 20th century, of course, because we have a great archive of recorded songs since the phonograph was invented. There are more songs per decade in the 21st century, but the century is still young. Something tells me Pentatonix is gearing us up for new Christmas music, since that's what they've become most known for. -via Metafilter
With over 47 million views in the past year and a half, I'm guessing most of us have seen this one. :) Still, I love me some PTX so thanks for the flashback! I recently watched all their appearances on season 3 of The Sing-Off (which I'd never even heard of, much less realized that's where they got their start), and man they were amazing even at that very early stage.
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I love that the guy sang the high note at the end of Bohemian Rhapsody.
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