4. Big Sean
Big Sean has taken a step from Kanye's little man to bonafide star this summer. After taking over song's like "Burn," and "Mercy," he's also commanded crossover appeal appearing on Justin Bieber's "As Long As You Love Me," and Cris Cab's "Good Girls Don't Grow On Trees." He was specifically tapped by Jay-Z and Kanye West to remain on the song "Clique," which reportedly every G.O.O.D. Music member recorded over. Sean also dropped one of the best project of the year, Detroit, which is leaps and bounds ahead of his first album, Fianlly Famous. What's next for the Detroit player?