On 8th September 2018, Machine Gun Kelly released 'Rap Devil', a diss track aimed at Eminem.
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13 facts you need to know about ‘Rap Devil’ rapper Machine Gun Kelly

6. On 8th September 2018, Machine Gun Kelly released 'Rap Devil', a diss track aimed at Eminem.
After Eminem repeatedly dissed him on his surprise album 'Kamikaze', Machine Gun Kelly released his response in the form of 'Rap Devil'. The title is a play on words of Eminem's song 'Rap God', and the pair soon became embroiled in a back-and-forth beef.Picture: PA Images