In 2008 Human Nature performed for the first time in the United States, with a two-month engagement at Atlantic City's Tropicana Casino. In April they performed with Mary Wilson on the Australian TV show, "It Takes Two", where they sang two duets from their "Get Ready" album: "It Takes Two" and "River Deep, Mountain High". Sony issued a compilation box set, "The Motor City Collection", on 19 April 2008 – to coincide with Wilson's duets – which peaked at No. 18.