Question: Who produced Lady Gaga's third studio album?

<P0-S0> "Judas" is a song by American singer Lady Gaga, from her second studio album, "Born This Way" (2011). <P0-S1>  It was released four days ahead of schedule by Interscope Records on April 15, 2011. <P0-S2>  Written and produced by Lady Gaga and RedOne, "Judas" is a dance and electro house song about a woman in love with a man who betrayed her. <P0-S3>  It embodies the incidents that have haunted Gaga in the past, and its core meaning refers to the negative parts of her life that she cannot escape. <P0-S4>  Gaga has further explained that the song was also about honoring one's inner darkness in order to bring oneself into the light. <P0-S5>  The artwork for the single was designed by Gaga in Microsoft Word. <P0-S6>  In spite of a polarizing impact on several religious groups, the song was generally well received by critics, who likened the song to "Bad Romance" with some noting it should have been the album's lead single. <SEP> <P1-S0> "Gypsy" is a song recorded by American singer Lady Gaga, for her third studio album "Artpop" (2013). <P1-S1>  It was written and produced by Gaga with French DJ Madeon, with additional writing credits from RedOne and Paul "DJ White Shadow" Blair. <P1-S2>  The song was developed with Madeon after Gaga's Born This Way Ball tour performance in France. <P1-S3>  "Gypsy" was described by Gaga as "Artpop"' s most personal song; she elaborated that it was about travelling the world and the loneliness associated with it. <P1-S4>  A Europop and electropop song, "Gypsy" is a 1980s style "anthemic" track with piano and guitar instrumentation, and lyrically talks about Gaga's fans as being the people she feels closest to. <P1-S5>  The track was mistakenly assumed to be the third single from the album when Interscope Records listed it on their SoundCloud page reserved for future releases. <SEP> <P2-S0> Artpop (stylized as ARTPOP) is the third studio album recorded by American singer Lady Gaga, released on November 6, 2013, by Streamline and Interscope Records. <P2-S1>  Gaga began planning the project in 2011, shortly after the launch of her second effort, "Born This Way". <P2-S2>  Work continued until 2013 while the singer was traveling for her Born This Way Ball concert tour and recovering from surgery for an injury she had sustained while touring. <P2-S3>  Gaga described "Artpop" as "a celebration and a poetic musical journey" and an exploration of the "reverse Warholian" phenomenon in pop culture. <P2-S4>  It displays an intentional "lack of maturity and responsibility" by comparison to the darker and anthemic nature of "Born This Way". <P2-S5>  Gaga collaborated with various producers on the record, including Paul "DJ White Shadow" Blair, RedOne, Zedd and Madeon. <P2-S6>  Lyrically, "Artpop" revolves around Gaga's personal views of fame, sex and self-empowerment; references include Greek and Roman mythology. <P2-S7>  It also features guest vocals from T.I., Too Short, Twista, and R. Kelly. <SEP> <P3-S0> Paul Blair (known by his stage name DJ White Shadow, sometimes written as DJWS) is an American music producer and DJ currently based in Chicago, Illinois. <P3-S1>  He is best known as the producer for "Yu-Gi-Oh! <P3-S2> " and Lady Gaga's "Born This Way" and "Artpop" albums. <P3-S3>  Blair has played in numerous cities throughout the United States, including Los Angeles, Atlanta, Milwaukee, Las Vegas, and New York. <P3-S4>  In addition he has toured as a headliner as well as with Lady Gaga internationally.