If you’ve seen music composer and commentator Rob Kapilow breaking down Kojo’s theme song, then you know the energy he brings to such conversations. He was in top form again yesterday during an hour-long discussion of holiday music that included an analysis of “Angels We Have Heard On High” by Pentatonix. Watch as Kapilow, the host of What Makes It Great?, shows his deep love of the popular a cappella group’s arrangement of the classic hymn. (The full video of Pentatonix’s performance is below.)