Madonna’s 5 Best Collaboration Songs. ... In the 1980s, pop music became a lot more focused on image and sexuality than it ever had before. Madonna and Prince helped instigate that trend.

Bolstering each other up for what felt like the entirety of 2014, Nicki Minaj and Beyonce played a game of collaboration tennis, remixing and guesting on two of the year’s best hip-hop tracks.