Question: Shaming of the Sun was a studio album by which folk rock music duo?

full_context: Document 1: Shaming of the Sun: Shaming of the Sun, sometimes mislabeled as Shaming the Sun, is the sixth studio album by the Indigo Girls, released in 1997.
Document 2: Indigo Girls: Indigo Girls are a Grammy Award-winning folk rock music American duo consisting of Amy Ray and Emily Saliers. They met in elementary school and began performing together as high school students in Decatur, Georgia, part of the Atlanta metropolitan area. They started performing with the name Indigo Girls as students at Emory University, performing weekly at The Dugout, a bar in Emory Village.
Document 3: Ruby Amanfu: Ruby Amanfu is a Ghanaian-born singer and songwriter based out of Nashville, TN and Los Angeles, CA. Amanfu released her most recent studio album, Standing Still, on August 28, 2015, following a double single release of "Bluff" and "Love Out Loud" in 2013. Amanfu is known for her collaborations with Jack White in his all-female band, The Peacocks. She is also well known for being one half of the duo Sam & Ruby, whose album was named Associated Press Album of the Year in 2009.
Document 4: Shelter from the Ash: Shelter from the Ash is the tenth album by experimental indie rock band, Six Organs of Admittance, released on November 20, 2007. It continues the progression begun on "School of the Flower" from experimental acoustic pieces toward more standard rock song structures.
Document 5: The Sun Awakens: The Sun Awakens is the ninth album by experimental indie rock band, Six Organs of Admittance, released in 2006. Six Organs' frontman, Ben Chasny, composed all of the album's material. The album mixes influences of folk and indie rock. An eastern influence is most prominent on the final track, which includes drones, chants and a ney.
Document 6: Court Yard Hounds: Court Yard Hounds is an American country music and folk duo, founded by sisters Martie Maguire and Emily Robison. They, along with Natalie Maines, make up the Dixie Chicks. The sisters decided to record a side project under a different name. Court Yard Hounds, featuring Robison for the first time as lead vocalist, released a debut album for Columbia Records, the same label for which the Dixie Chicks has recorded, on May 4, 2010. The album debuted at No. 7 on the Billboard 200 chart, initially selling 61,000 copies. It has sold approximately 825,000 copies in the United States.
Document 7: Summer EP (Sherwood EP): "Summer EP" is a 2006 release by the indie rock band Sherwood. During the spring of 2006, AbsolutePunk.net offered a 5-song version of this album to download for free. Later that year, a physical version with two extra tracks was released for sale at the band's live performances and online.
Document 8: Shame (EP): Shame is the second EP by hip hop duo MadGibbs, which consists of Indiana rapper Freddie Gibbs and California hip hop musician Madlib. Preceded by their 2011 EP, "Thuggin'", it was released on July 10, 2012 through Madlib Invazion in both digital and 12-inch vinyl formats. The 8-track EP includes two vocal tracks, "Shame" featuring singer BJ the Chicago Kid and "Terrorist", as well as instrumentals, a cappellas and two bonus beats by Madlib.
Document 9: Dixie Chicks: Dixie Chicks are an American country music band which has also crossed over into other genres, including pop and alternative country. The band is composed of founding members (and sisters) Martie Erwin Maguire and Emily Erwin Robison, and lead singer Natalie Maines. The band formed in 1990 in Dallas, Texas, and was originally composed of four women performing bluegrass and country music, busking and touring the bluegrass festival circuits and small venues for six years without attracting a major label. After the departure of one bandmate, the replacement of their lead singer, and a slight change in their repertoire, Dixie Chicks soon achieved commercial success, beginning in 1998 with hit songs "There's Your Trouble" and "Wide Open Spaces".
Document 10: The Flash Girls: The Flash Girls are a now defunct folk music duo based out of Minneapolis, Minnesota.. The duo consisted of Emma Bull, a noted science fiction author, and Lorraine Garland, also known as "The Fabulous Lorraine". Garland is also notable as Neil Gaiman's personal assistant; the group formed at a Guy Fawkes Day party at Gaiman's home. The connections that both Bull and Garland had with the science fiction and fantasy communities allowed them to have an unusually notable group of people writing songs for and with them, including Jane Yolen, Alan Moore, and Neil Gaiman. These songs are mixed in with their own original works, traditional songs such as Star of the County Down and Lily of the West, as well as poems put to music, including works by Dorothy Parker and A.A. Milne.
Document 11: Shadows on the Sun: Shadows on the Sun is the second studio album by American rapper Brother Ali. It was released on May 2, 2003 on Rhymesayers Entertainment. It was produced entirely by Ant of Atmosphere. The album received almost unanimous critical acclaim.
Document 12: The Milk Carton Kids: The Milk Carton Kids are an American indie folk duo from Eagle Rock, California, United States, consisting of singers and guitarists Kenneth Pattengale and Joey Ryan, who formed the group in early 2011. The Grammy-nominated, flat-picking harmony duo have since emerged as a powerful voice defining the continuing folk tradition whose virtuosity defines The Milk Carton Kids to the delight of both traditionalists and newcomers to the folk movement alike. NPR has described their approach to music as "gorgeous contemporary folk" and "Gillian Welch & David Rawlings-meets-Simon & Garfunkel with a splash of The Everly Brothers", which fairly represents the band's music while also appealing to the intended audience. The band has recorded and released four albums: "Retrospect", "Prologue", "The Ash & Clay" and "Monterey". The forewords to both "Prologue" and "The Ash & Clay" were written by singer-songwriter and producer Joe Henry. The band is noted for releasing their first two albums for free and for playing their vintage guitars; Ryan playing a 1951 Gibson J-45 and Pattengale a 1954 Martin 0-15.
Document 13: How I Learned to Stop Giving a Shit and Love Mindless Self Indulgence: How I Learned to Stop Giving a Shit and Love Mindless Self Indulgence
Document 14: Girl Authority: Girl Authority was an American pop girl group. The group consisted of nine girls, at the time, ranging in ages 8 to 13; Jacqueline Laviolette, Carly Grayson, Jessica "Jess" Bonner, Crystal Evans, Kate Barker, Zoë Virant, Jessica Tarr, Gina Miele and Alexandra "Alex" Bilbo. The group was established in the summer of 2005 by the group's vocal coach/executive producer Samantha Hammel, Scott Billington (a Grammy award-winning producer) and the CEO of Rounder Records, John Virant, the father of Zoe, one of the members of Girl Authority. Based on the oldest girls graduating high school; in the summer of 2010, the girls contracts with Rounder Records ceased, and the band officially retired. Currently, the majority of the group members are attending or just graduating college. All of these girls are still close friends and get together for reunions.
Document 15: Shame Shame Shame (Ratt song): "Shame Shame Shame" is a single by American heavy metal band Ratt, released on their album "Detonator". The song's lyrics focus mainly on cheating. The song was co-written by famed songwriter Desmond Child, Ratt guitarist Warren DeMartini and lead singer Stephen Pearcy. The song features a slow detuned opening guitar solo, titled "Intro To Shame", that suddenly speeds up at the 0:55 mark until the drums and the bass come in at 1:01 into the song.
ground_truth: Indigo Girls