Pentatonix put aside covers, deliver a cappella originals on 'The Lucky Ones'
Hamilton native stars on a capella reality show "Sing It On" | Local News | salemnews.com
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The Hard Work And Close Bonds Of Competitive College A Cappella : NPR
Mankato group wins SingStrong a capella competition
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10 College A Cappella Groups Totally Slaying It ⋆ College Magazine
Pitch Perfect fans rejoice, there's a new a cappella talent show coming to TV
All 5 'Sing-Off' Winners Ranked, Because They Can't All Be Number 1
Miscellania | Bowdoin College's Oldest Women's A Cappella Group
Pentatonix — Wikipédia
The Sing-Off' Finale Recap: Season-Four Winner Named (Video)
The Sing-Off (TV Series 2009– ) - News - IMDb
Just Sing! Macy's Kicks off Its First All-School A Cappella Challenge with Grammy Award-Winners Pentatonix | Business Wire
Award-Winning Northeastern A Cappella Group Pitch, Please! Pivots & Perseveres to Continue to Make & Share Music - College of Arts, Media and Design (CAMD)
The Sing-Off': Meet the Season 4 Singers
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Sing! 16 Memorable A Cappella Moments in Film & TV