Hit-Boy has given fans some insight into the beat he made for A$AP Rocky‘s all-star cut “1Train,” taken from the Harlem rapper’s debut album. Released on January 15, 2013, Long. Live. A$AP debuted at No.1 on the Billboard 200 chart, selling 139,000 equivalent units in its first week. It features the singles “Goldie”, “Fuckin’ Problems”, “Wild for the Night”, and …