Over the course of covering the second season of HBO's "The Last of Us," we noticed that the cast and creators of the series had a lot to say about their shared passion for music.

Veteran Sal Gonzalez lost his leg after an explosive hit his truck in Iraq. Music helped him heal, and tell the stories of other veterans.

“My goal is to go in and put on the best show that I personally can,” Heck said. “If it turns into something bigger, that’s ...