ENTERTAINMENT
10/25/2013 09:30 am ET

Pentatonix 'Evolution Of Beyonce' A Cappella Medley Is Fierce

AP

A cappella group Pentatonix, in an effort to promote their upcoming album, "PTX Vol. 2," released an incredible mashup of Beyonce hits on Thursday. It worked! Titled "Evolution of Beyonce," the mashup features everything from "Bills Bill Bills" to "Grown Woman" and can only be described as fierce. Listen below to hear what Beyonce hits sound like when performed with mouth noises. Head to the Pentatonix website for tour and album information.

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