Without a doubt, the most popular and influential a cappella group in the world is Pentatonix (PTX)
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On Thursday night, PTX performed in the Hollywood Bowl for the first time
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Prior to their annual Christmas tour, which starts on November 17, this was their lone U.S. appearance
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The trio that started the ensemble ten years ago, Scott Hoying (baritone), Kristin Maldonado (soprano), and Mitch Grassi (tenor), were all between the ages of 20 and 21
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PTX won the Grammy for Best arrangement, or A capella in 2015 and 2016, making them the first A capella ensemble to do so
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However, PTX's third consecutive victory was for Best Country Duo/Group Performance.
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PTX also gave a performance at the 2014 Kennedy Center Honors in Tom Hanks' honour.