The Sound of Silence Pentatonix The Sound of Silence Pentatonix is an a cappella group from Arlington, Texas, consisting of vocalists Scott Hoying, Mitch Grassi, Kirstin Maldonado, Kevin Olusola, and Matt Sallee. Formed in 2011, the group rose to prominence following their victory on the third season of the American singing competition The Sing-Off. They…
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