Peter James Hollens (born March 4, 1982) is an American singer/songwriter, producer and entrepreneur. He has been involved with a cappella music since 1999 when he and Leo da Silva founded the University of Oregon's a cappella group, On The Rocks, known as the first official collegiate a cappella group in Oregon. He regularly releases new music videos to his YouTube channel. With over 5 million followers and subscribers, his content has received over a billion total views since 2011.
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Pentatonix
American a cappella group
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Malukah
Mexican singer
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Jacob Collier
English musician and multinstrumentalist
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Shoshana Bean
American theater actress and singer
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Amy Shark
Australian recording artist and singer-songwriter
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Archie Roach
Australian musician
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Charlie Puth
American singer, songwriter, and record producer
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Sara Bareilles
American recording artist; pop rock singer-songwriter and pianist
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Straight No Chaser
professional a cappella group from Indiana, United States
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RÜFÜS DU SOL
alternative dance group
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The Piano Guys
band
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George Canyon
Canadian musician
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Lea Salonga
Filipina singer
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Alan Walker
Norwegian-British music producer
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Travis Scott
American rapper, singer, songwriter, and record producer
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Peter Cetera
American musician
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Rick Astley
British singer and songwriter
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Social Repose
American singer and YouTuber
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Tori Kelly
American singer
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Maybebop
German a cappella vocal group
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Christopher Tin
composer
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The Amity Affliction
Australian post-hardcore band
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Debbie Gibson
American singer, songwriter, record producer, actress
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Esperanza Spalding
American jazz bassist and singer
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Reeve Carney
American singer-songwriter and actor