Def Jam Rapstar

The first challenge you will have access to is on Stage 1, and is Public Enemy's "Fight The Power". Achieve the target score for the song, which adjusts based on the difficulty you choose (less points are required on Easy because you cannot earn as many points). You will earn the song to play in normal career for a chance to earn 5 mics on it, as well as earn this achievement. It will unlock as soon as you get to the results screen. You will also unlock the achievement "Cultivating Music" at the same time if done this way.