Just when you thought Drake was the only big-name in hip-hop accused of relying on the next man's pen game, check out 10 Hip-Hop Songs You Probably Didn't Know Were Written by Another Rapper.
Before Drake and Meek Mill were going at it with diss tracks, they learned how to battle their opponents from the best veteran MCs before them. Check out 10 Epic Beefs in Hip-Hop History.