DMX – Who We Be
Creed II has done an excellent job at using the right music to tell the story in the trailers. If you’re trying to find the exact song in the trailer you won’t. They’ve blended the musical score from Creed with the lyrics of DMX’s Who We Be.
If you don’t know who DMX is, you should educate yourself on his music. You’ll start noticing that some of these “hard” rappers today were inspired by DMX.