Run the Jewels, also known by the initialism RTJ, is an American hip hop supergroup formed in 2013 by rapper/producer El-P and rapper Killer Mike. They released their acclaimed debut studio album, Run the Jewels, as a free digital download in 2013. This was followed by Run the Jewels 2 in 2014, which was also praised by critics. Their critically acclaimed third album, Run the Jewels 3, was released digitally in 2016; a physical release appeared in 2017. Source: Wikipedia.