Once upon a time, rappers Jay-Z and Kanye West had the kind of bromance that friendship goals are made of. Per Billboard, the two icons began collaborating when West was recruited to produce tracks for Jay-Z's Roc-A-Fella Records in the late '90s. Over the years, the hitmakers were candid about their successful working relationship as it led to their culture-defining album, "Watch The Throne." "It's just protecting the music and the culture. It's people that's in the forefront of the music [industry]," Jay-Z told OkayPlayer. "'Watch the Throne,' like protect it," he added. "You just watch how popular music shift[s], and how hip-hop basically replaced rock & roll as the youth music."