With just a week until Dark Sky Paradise drops, Big Sean moves mountains on “One Man Can Change the World” featuring Kanye West and Big Sean. The Detroit rapper reflects on his remarkable journey on the inspiring piano-driven ballad, which features uplifting words from his G.O.O.D. Music brothers.

Sean also honors his late grandmother, who was one of the first black female captains in World War II. “All my life you’ve been an angel in disguise,” he says on his tear-jerking verse.

Listen to the emotional tribute below.

Dark Sky Paradise hits stores Feb. 24 featuring Ariana Grande, Lil Wayne, Jhené Aiko, Chris Brown, and more.