Question: Avriel Benjamin "Avi" Kaplan won what show as part of the group Pentatonix?
Sentence (from "Pentatonix discography"): It was re-released in November 2013 with one of its new tracks, "Little Drummer Boy", debuting at number 13 on the US "Billboard" Hot 100 and charting in other countries such as Austria, Canada and New Zealand.
Relevant evidence: No