Rappers Fetty Wap, Future, Wiz Khalifa, Drake, Kanye West and others delivered chart-topping tracks in 2015. Here are the 20 best songs that defined rap music this year.
Rappers Big Sean and Travi$ Scott help usher in the release of Justin Bieber’s new album 'Purpose' by appearing in the pop crooner's short film series called 'Purpose: The Movement.'