James Christopher D'Agostino (born July 7, 1975), professionally known as DJ Green Lantern, is an American hip hop DJ and producer from Rochester, New York. In 2002, D'Agostino was signed by American rapper Eminem, to become the official DJ for Shady Records, after DJ Head stepped down for undisclosed reasons.

Source: Wikipedia (https://en.wikipedia.org/wiki/DJ_Green_Lantern)