G-Dragon formed a duo with rapper Nelly.
Country Grammar is the debut studio album by American rapper Nelly . G-Dragon . G-Dragon later formed a duo with fellow Big Bang member T.O.P to record and release the album GD & TOP ( 2010 ) , which contained the top-five hits `` High High '' , `` Oh Yeah '' , and `` Knock Out '' on the Gaon Digital Chart , while the album peaked at number-one .