Audio Two was an American hip-hop duo from Brooklyn, New York, composed of brothers Kirk “Milk Dee” Robinson and Nathaniel “Gizmo Dee” Robinson. Formed in the mid-1980s, Audio Two is best known for their 1987 hit single “Top Billin'”, which has since become a hip-hop classic and has been sampled by numerous artists, including Mary J. Blige, Nas, and The Notorious B.I.G. The duo released their debut album What More Can I Say? in 1988, but disbanded soon after, with Milk Dee going on to pursue a solo career.