![El-P (left) and Killer Mike perform at the Pitchfork Music Festival in Chicago in July 2015.](https://webarchive.library.unt.edu/web/20170128230311im_/https://media.npr.org/assets/img/2017/01/27/ap_541050302881_wide-1e06d89735859b166d3ee06e75f4f16bed06ec06-s800-c15.jpg)
El-P (left) and Killer Mike perform at the Pitchfork Music Festival in Chicago in July 2015. Barry Brecheisen/Barry Brecheisen/Invision/AP hide caption
El-P (left) and Killer Mike perform at the Pitchfork Music Festival in Chicago in July 2015.
Barry Brecheisen/Barry Brecheisen/Invision/AP