<P> In January 2014, Pizzolatto signed a two - year contract extension with HBO, effectively renewing the series for two additional seasons . Much like its predecessor, season two of True Detective consists of eight episodes, all written by Pizzolatto . However, the responsibility of directing was assigned to several people; Justin Lin directed the first two episodes, and, in July 2014, William Friedkin was being considered as a director of later episodes . Fukunaga, who directed all of season one, did not return as director; he remains, however, an executive producer, as do McConaughey and Harrelson . Pizzolatto hired fellow novelist Scott Lasser to help break stories for the second half of the season . </P> <P> The success of True Detective, and its subsequent renewal, fueled casting rumors in the press . At one point, early media reports named Cate Blanchett, Josh Brolin, Joaquin Phoenix, Garrett Hedlund, Michael Fassbender, Jessica Chastain, Christian Bale, Elisabeth Moss, and Brad Pitt to be among a raft of potential candidates for the leads . The season's first significant casting was Colin Farrell as Ray Velcoro, which he revealed in his September 2014 interview with the Sunday World . Vince Vaughn, playing the role of Frank Semyon, became HBO's next important signing toward the end of the month . By November, True Detective's principal cast expanded to include Rachel McAdams, Taylor Kitsch, and Kelly Reilly . </P> <P> California was selected as the setting for the second season . Producers were urged to avoid filming in Los Angeles and, instead, focus on the more obscure regions of the state to "capture a certain psycho - sphere ambiance". Production began in November 2014 . </P> <P> T Bone Burnett returned as composer for the second season, and the score for the season is more electronic - influenced than the previous season . Burnett noted that the change in landscape, to California, also changed how he wrote the music . Leonard Cohen's "Nevermind" is the season two opening theme, which is a song off Cohen's 2014 album, Popular Problems . The theme song's lyrics change with every episode, incorporating different verses from Cohen's song . Lera Lynn's music is featured throughout the season, and the song "The Only Thing Worth Fighting For", which she composed with Burnett and Rosanne Cash, is used in the season two trailer . Lynn collaborated with Burnett on writing several original songs for the series, with cues from creator Nic Pizzolatto regarding lyrics and content . Lynn also portrays a bar singer in the season, where several of her songs are used, including "My Least Favorite Life", which was written by Cash . </P>

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