4. Madonna - In a generation that is looking to stars of the past (i.e. Maroon 5 and Christina Aguilera "Moves Like Jagger") to revive the music scene at present, a Madge/Minaj duet would conform to the trend but still dodge predictability. In the Pink Friday bonus track "Girls Fall Like Dominoes," the first lady of Young Money name-drops the pop legend. If Nicki claims to be the boss, it's only right she gets a material girl.