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http://www.mtv.com/news/1949397/pentatonix-sing-harry-styles-katy-perry-tweets/

 

Pentatonix Sing Harry Styles And Katy Perry’s Tweets
And it's freakin' adorable.
by cory midgarden 10/2/2014

They’ve covered hits by the likes of Ariana Grande and Sam Smith, mashed up Beyoncé’s entire musical career and collaborated with some of the biggest YouTubers on the Web. So when the acapella group Pentatonix stopped by MTV News, we wanted nothing more than for the fivesome to a.) sing and b.) sing something star-studded.

This request took us to Twitter, where we handpicked some of our favorite celebrity updates, including tweets from Harry Styles, Katy Perry and “Teen Wolf” star Dylan O’Brien.

What transpired from there was magical and musical and can only be fully understood by clicking the video up at the top. So, check it out!