[Bryan Koneitzko] has some fantastic ideas. One was to make Before, the piece for the backstory of the brothers in Legend of Korra, a duet: the cello representing Noatak and the Erhu representing Tarrlok.
Tarrlok:Avatar Korra, I am truly sorry for all that I did to you. I thought I was better than my father, but his ghost still shaped me. I became a soldier of revenge, just like he wanted me to be. And so did my brother.