Related Information for Abn There are two artists named ABN. (A.B.N. is not an official artist name for either).ABN from US: The long awaited union of the rappers Z-Ro and Trae; forming Assholes By Nature.It Is What It Is is a studio album from cousins Z-Ro & Trae. It includes 18 tracks including ‘Umm Umm’, ‘Who’s The Man’ and ‘S.O.S. (Slap On Sight)’. Although Z-Ro & Trae have worked together on several songs in the past few years, this is the first album together since 2003’s Resurre.. read more