Hip-hop star J. Cole has written the foreword for DJ, rapper and actress Angie Martinez's new memoir. The Latina, who shares a son with Nokio from Dru Hill, has detailed her rise in the radio world in My Voice, in which she will also detail her many interviews and close friendships with music heavyweights like Jay Z and Sean 'Diddy' Combs. The autobiography is set for release in May (16).