Question: When did the pop singer quit being an original judge on American Idol?

full_context: Document 1: American Idol: With the exception of seasons one and two, the contestants in the semifinals onwards perform in front of a studio audience. They perform with a full band in the finals. From season four to season nine, the American Idol band was led by Rickey Minor; from season ten onwards, Ray Chew. Assistance may also be given by vocal coaches and song arrangers, such as Michael Orland and Debra Byrd to contestants behind the scene. Starting with season seven, contestants may perform with a musical instrument from the Hollywood rounds onwards. In the first nine seasons, performances were usually aired live on Tuesday nights, followed by the results shows on Wednesdays in the United States and Canada, but moved to Wednesdays and Thursdays in season ten.
Document 2: American Idol (season 5): The fifth season of reality television singing competition American Idol began on January 17, 2006, and concluded on May 24, 2006. Randy Jackson, Paula Abdul and Simon Cowell returned to judge, and Ryan Seacrest returned to host. It is the most successful season to date ratings-wise, and resulted in 18 contestants (including all of the top 10 and a few semifinalists) getting record deals -- nine of them with major labels. It was the first season with a male winner (Taylor Hicks) and a female runner - up (Katharine McPhee). It was also the first season of the series to be aired in high definition.
Document 3: American Idol: Beginning in the tenth season[citation needed], permanent mentors were brought in during the live shows to help guide the contestants with their song choice and performance. Jimmy Iovine was the mentor in the tenth through twelfth seasons, former judge Randy Jackson was the mentor for the thirteenth season and Scott Borchetta was the mentor for the fourteenth and fifteenth season. The mentors regularly bring in guest mentors to aid them, including Akon, Alicia Keys, Lady Gaga, and current judge Harry Connick, Jr..
Document 4: American Idol: Fox announced on May 11, 2015 that the fifteenth season would be the final season of American Idol; as such, the season is expected to have an additional focus on the program's alumni. Ryan Seacrest returns as host, with Harry Connick Jr., Keith Urban, and Jennifer Lopez all returning for their respective third, fourth, and fifth seasons as judges.
Document 5: American Idol: The first season was co-hosted by Ryan Seacrest and Brian Dunkleman. Dunkleman quit thereafter, making Seacrest the sole emcee of the show starting with season two.
Document 6: America's Got Talent: The original judging panel consisted of David Hasselhoff, Brandy Norwood, and Piers Morgan. Sharon Osbourne replaced Norwood in season two (2007), and Howie Mandel replaced Hasselhoff in season five (2010). Howard Stern replaced Morgan in season seven (2012). Mel B replaced Osbourne in season eight (2013), while Heidi Klum joined as a fourth judge. Simon Cowell replaced Stern in season eleven (2016). Regis Philbin was the original host (season one), followed by Jerry Springer for two seasons (2007 -- 2008), followed by Nick Cannon for eight seasons (2009 -- 2016). Supermodel and host Tyra Banks replaced Cannon for the twelfth season (2017).
Document 7: American Idol: Season 12 premiered on January 16, 2013. Judges Jennifer Lopez and Steven Tyler left the show after two seasons. This season's judging panel consisted of Randy Jackson, along with Mariah Carey, Keith Urban and Nicki Minaj. This was the first season since season nine to have four judges on the panel. The pre-season buzz and the early episodes of the show were dominated by the feud between the judges Minaj and Carey after a video of their dispute was leaked to TMZ.
Document 8: American Idol: The thirteenth season premiered on January 15, 2014, with Ryan Seacrest returning as host. Randy Jackson and Keith Urban returned, though Jackson moved from the judging panel to the role of in-mentor. Mariah Carey and Nicki Minaj left the panel after one season. Former judge Jennifer Lopez and former mentor Harry Connick, Jr. joined Urban on the panel. Also, Nigel Lythgoe and Ken Warwick were replaced as executive producers by Per Blankens, Jesse Ignjatovic and Evan Pragger. Bill DeRonde replaced Warwick as a director of the audition episodes, while Louis J. Horvitz replaced Gregg Gelfand as a director of the show.
Document 9: American Idol (season 8): The eighth season of American Idol premiered on January 13, 2009, and concluded on May 20, 2009. Judges Simon Cowell, Paula Abdul, and Randy Jackson continued to judge the show's contestants, along with Ryan Seacrest as host. The season introduced Kara DioGuardi as the fourth judge on the Idol panel. It was also Abdul's final season as a judge. Kris Allen, a native of Conway, Arkansas, was announced the winner of the competition on May 20, 2009, defeating runner - up Adam Lambert after nearly 100 million votes. This was the second season where both of the final two contestants had been in the bottom three or two at least once before the finale, with the first being season three.
Document 10: American Idol: American Idol employs a panel of judges who critique the contestants' performances. The original judges were record producer and music manager Randy Jackson, pop singer and choreographer Paula Abdul and music executive and manager Simon Cowell. The judging panel for the most recent season consisted of country singer Keith Urban, singer and actress Jennifer Lopez, and jazz singer Harry Connick, Jr. The show was originally hosted by radio personality Ryan Seacrest and comedian Brian Dunkleman, with Seacrest continuing on for the rest of the seasons.
Document 11: American Idol: The show had originally planned on having four judges following the Pop Idol format; however, only three judges had been found by the time of the audition round in the first season, namely Randy Jackson, Paula Abdul and Simon Cowell. A fourth judge, radio DJ Stryker, was originally chosen but he dropped out citing "image concerns". In the second season, New York radio personality Angie Martinez had been hired as a fourth judge but withdrew only after a few days of auditions due to not being comfortable with giving out criticism. The show decided to continue with the three judges format until season eight. All three original judges stayed on the judging panel for eight seasons.
Document 12: America's Got Talent: The general selection process of each season is begun by the production team with open auditions held in various cities across the United States. Dubbed ``Producers' Auditions '', they are held months before the main stage of auditions are held. Those that make it through the initial stage, become participants in the`` Judges' Auditions'', which are held in select cities across the country, and attended by the judges. Each participant is held offstage and awaits their turn to perform before the judges, whereupon they are given 90 seconds to demonstrate their act, with a live audience present for all performances. At the end of a performance, the judges give constructive criticism and feedback about what they saw, whereupon they each give a vote - a participant who receives a majority vote approving their performance, moves on to the next stage, otherwise they are eliminated from the programme at that stage. Each judge is given a buzzer, and may use it during a performance if they are unimpressed, hate what is being performed, or feel the act is a waste of their time; if a participant is buzzed by all judges, their performance is automatically over and they are eliminated without being given a vote. Many acts that move on may be cut by producers and may forfeit due to the limited slots available for the second performance. Filming for each season always takes place when the Judges' Auditions are taking place, with the show's presenter standing in the wings of each venue's stage to interview and give personal commentary on a participant's performance.
Document 13: American Idol: The fourteenth season premiered on January 7, 2015. Ryan Seacrest returned to host, while Jennifer Lopez, Keith Urban and Harry Connick, Jr. returned for their respective fourth, third and second seasons as judges. Eighth season runner-up Adam Lambert filled in for Urban during the New York City auditions. Randy Jackson did not return as the in-house mentor for this season.
Document 14: American Idol: In season eight, Latin Grammy Award-nominated singer–songwriter and record producer Kara DioGuardi was added as a fourth judge. She stayed for two seasons and left the show before season ten. Paula Abdul left the show before season nine after failing to agree terms with the show producers. Emmy Award-winning talk show host Ellen DeGeneres replaced Paula Abdul for that season, but left after just one season. On January 11, 2010, Simon Cowell announced that he was leaving the show to pursue introducing the American version of his show The X Factor to the USA for 2011. Jennifer Lopez and Steven Tyler joined the judging panel in season ten, 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 season 12. However both Carey and Minaj left after one season, and Randy Jackson also announced that he would depart the show after twelve seasons as a judge but would return as a mentor. Urban is the only judge from season 12 to return in season 13. He was joined by previous judge Jennifer Lopez and former mentor Harry Connick, Jr.. Lopez, Urban and Connick, Jr. all returned as judges for the show's fourteenth and fifteenth seasons.
Document 15: American Idol: Towards the end of the season, Randy Jackson, the last remaining of the original judges, announced that he would no longer serve as a judge to pursue other business ventures. Both judges Mariah Carey and Nicki Minaj also decided to leave after one season to focus on their music careers.
ground_truth: before season nine
sub_queries: What pop singer was an original judge on American Idol? Answer: Paula Abdul
When did Paula Abdul quit as a judge? Answer: before season nine