https://www.digitalmusicnews.com/2017/10/27/best-hip-hop-albums/

https://www.rollingstone.com/music/lists/100-greatest-hip-hop-songs-of-all-time-w435246

http://playlists.net/500-greatest-hip-hop-songs-of-all-time

https://noisey.vice.com/en_uk/article/rp7zk6/38-hours-of-playlists-that-trace-the-evolution-of-modern-hip-hop