Audio Two were the Brooklyn, New York hip hop duo of rapper Kirk "Milk Dee" Robinson and DJ Nat "Gizmo" Robinson, most famous for their first hit, the classic "Top Billin'". They are also the older brothers of female rap star MC Lyte. Their debut single "Make It Funky" was released in 1987, but it was the b-side "Top Billin'" that hit, making not only the group instant stars but a deep cultural impact on hip hop. Wikipedia
The definitive Wikipedia entry for Audio Two. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Audio_Two