DVLP produced what song by Eminem that premiered via YouTube on October 14, 2013?
DVLP:  In 2013, he gained major recognition when he produced the Eminem single "Rap God". Rap God: "Rap God" is a song by American rapper Eminem. Rap God:  The song premiered via YouTube, on October 14, 2013, and was released in the US on October 15, as the third single from Eminem's eighth studio album, "The Marshall Mathers LP 2" (2013).
Rap God