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Markeyvius LaShun Cathey (born August 3, 1997), better known by his stage name Key Glock, is an American rapper and songwriter. A protege of Memphis rapper Young Dolph, he rose to fame in 2017 with his mixtape Glock Season.

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Markeyvius Cathey (born August 3, 1997), better known by his stage name Key Glock, is an American rapper from Memphis, Tennessee. A protégé of Memphis rapper Young Dolph, he rose to fame in 2017 for his mixtape Glock Season.

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Memphis-born rapper Key Glock delivers cold, stark, uncompromising verses about sex, guns, and money. His debut mixtape, Glock Season, appeared on Paper Route Empire in 2017. The release included the singles "On My Soul" and "Racks Today" (featuring Jay Fizzle), as well as production by Sosa 808, Izze Tha Producer, and DJ Squeeky. In early 2018, he issued Glock Bond, which debuted outside the Top 100 on the Billboard 200. Later that year, he returned with the mixtape Glockoma. In 2019, Glock teamed up with his friend Young Dolph on the joint album Dum and Dummer.