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Published on Feb 7, 2012
http://en.wikipedia.org/wiki/Overtone... ~ Avi Kaplan of Pentatonix demonstrates his very special talent, overtone singing. Recorded at the Los Angeles A Cappella Festival, UCLA Campus, 1/29/12. You can hear lots more of Avi's overtone singing by putting "Avi overtone" into YouTube's search box above.