American Idol that season, but left after just one season. On January 11, 2010, Simon Cowell left the show to pursue introducing the American version of his show "The X Factor" for 2011. Jennifer Lopez and Steven Tyler joined the judging panel in the tenth season, but both left after two seasons. They were replaced by three new judges, Mariah Carey, Nicki Minaj and Keith Urban, who joined Randy Jackson in the twelfth season. However both Carey and Minaj left after one season, and Randy Jackson departed the show after twelve seasons as a judge but would return as a mentor. Urban
Judge Jackson book door-to-door and via singing conventions and educational programs. Judge Jackson Judge J. Jackson (March 12, 1883, Montgomery County, Alabama - April 7, 1958, Ozark, Alabama) was an American sacred harp composer, songwriter, and educator. His 1934 publication "The Colored Sacred Harp" was later recognized by scholars such as Doris Dyen and "New Grove" writer Joe Dan Boyd as an important document of early twentieth-century shape note singing practice. Jackson was raised in a family of sharecroppers and obtained little formal education as a child. When he was sixteen years old, he left home and took work as a farmhand