Ahead of the release of Dark Sky Paradise Big Sean's "One Man Can Change the World" featuring Kanye West and John Legend has been made available for those who pre-order the album in the United Kingdom. The uplifting, piano-backed song has all three taking turns at singing the hook, as well as bars from the Complex cover star. Big Sean lives up to his promise to make his music more personal by detailing his grandmother's great influence. She even makes a sweet appearance at the end in a recorded phone call. 

You can purchase the song here, and stream it below via Spotify.

Update: "Win Some, Lose Some" featuring Jhene Aiko and "One Man Can Change the World" are both available on iTunes now.