Avriel Benjamin "Avi" Kaplan won what show as part of the group Pentatonix?
Pentatonix:  When Sony's Epic Records dropped the group after "The Sing-Off", the group formed its YouTube channel, distributing its music through Madison Gate Records, a label owned by Sony Pictures. Avi Kaplan: Avriel Benjamin "Avi" Kaplan is an American singer and songwriter, most well known as a past member of the a cappella group Pentatonix.
i don't know