ABN or Assholes by Nature is a rap duo consisting of Houston, Texas-based artists Trae and Z-Ro. They have released two albums, Assholes by Nature (2003) and It Is What It Is (2008). The duo is a collaboration between Z-Ro and Trae, both of whom are solo recording artists well established within the underground Texas rap scene. The cousins first collaboration was on Z-Ro's 1998 album Look What You Did to Me, with them regularly appearing on each other's albums. Read more on Last.fm