It means every winner of American Idol have a different genre of music (even though if it is same, it came from different gender):
Season 1 : Kelly Clarkson (Pop/Rock)
Season 2 : Ruben Studdard (RnB/Gospel)
Season 3 : Fantasia B (RnB/Soul)
Season 4 : Carrie Underwood (Country Pop)
Season 5 : Taylor Hicks (Blues/Soul)
Season 6 : Jordin Sparks (Pop/RnB)
Season 7 : David Cook (Alternative Rock)
Season 8 : Kris Allen (Pop/Folk)
Great Variety
