Pentatonix will be in town tonight playing at the Den San Prem Cen and obviously if you have tickets you know and love their acappella stylings.

However, their opening act, Us the Duo, may not seem so familiar.

Us the Duo is made up of married couple, Michael and Carissa Alvarado.

They got their start making Vine videos covering their favorite songs and one thing lead to another and boom! They were signed to Republic Records and now they're on tour with Grammy winning group, Pentatonix!

A few of their videos have gone viral. You have probably heard of Us the Duo without realizing it.

Here is one of their more notable YouTube videos. It's a medley of the top songs from 2014.


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