Question: Where is the group that performed Guillotine IV based?

Context articles: Guillotine IV (The Final Chapter)
Dino, Desi &amp; Billy
List of Twin Star Exorcists episodes
Guillontine IV (The Final Chapter)
Ernie Earnshaw
Alphavirus
Clay (musical)
Falling in Reverse
Sorry to Bother You
Le jeune Henri

'Guillotine IV (The Final Chapter)' is the second single from Falling in Reverse's third album "Just Like You".
 It is the fourth and final installment of the Guillotine series, which was started by Escape the Fate when former lead singer Ronnie Radke was in the band.
 The first song titled 'The Guillotine' was in Escape the Fate's debut album Dying Is Your Latest Fashion in 2006.
 The second song which was titled 'This War Is Ours (The Guillotine II)' was on Escape the Fate's second studio album This War Is Ours in 2008.
 The third song which was titled 'The Aftermath (The Guillotine III)' was on Escape the Fate's third self-titled album in 2010.
 Then finally in 2015 Falling in Reverse finished the series with ""Guillotine IV (The Final Chapter).
Dino, Desi & Billy were an American singing group that existed between 1964 and 1969.
 The group featured Dean "Dino" Martin (Dean Paul Martin, the son of traditional pop singer Dean Martin), Desi Arnaz, Jr. (Desiderio Arnaz IV, the son of television stars Desi Arnaz and Lucille Ball), and their friend Billy Hinsche.
 A reconstituted version of the group performed between 1998 and 2010.
Twin Star Exorcists is an anime series produced by Pierott based on a manga series of the same name by Yoshiaki Sukeno.
 The series began airing between April 6, 2016 to March 29, 2017 on TV Tokyo and other TX Network stations, and later on AT-X.
 The series follows the same plot as the manga until episode 20, however, from episode 21 the series diverges into an original story, that is not featured in the manga.
 The series' first opening theme song is "Valkyrie -Ikusa Otome-" (Valkyrie -戦乙女- ) by Wagakki Band, while the first ending theme is "Eyes" (アイズ , Aizu ) by Hitomi Kaji.
 The second opening theme, "Re:Call", is performed by the idol group i☆Ris, while the second ending theme, "Yadori-boshi" (宿り星 ) is performed by the two-man group Itowokashi (Kashitarō Itō and Ryō Miyada).
 The third opening theme, "sync" is performed by lol the music director, while the third ending theme "Hide & Seek" is performed by Girlfriend.
 The fourth opening theme, "Kanadeai" is performed by Itowokoashi, while the fourth ending theme "Hotarubi" is performed by Wagakki Band.
'Guillotine IV (The Final Chapter)' is the second single from American post-hardcore band Falling in Reverse's third album "Just Like You".
 It is the fourth installment of the Guillotine series, Escape the Fate started it when former lead singer Ronnie Radke was in the band.
Ernie Earnshaw is a musician and recording artist.
 He began playing drums with the popular surf-band of the 1960s, the Royale Monarchs at the Bob Eubanks Cinnamon Cinder night clubs in Los Angeles and performed on Sam Riddell's Ninth St. West dance program.
 Producer Gary Usher signed the new reformed group The Forte' Four to recording contract at Decca Records.
 Two singles were released without much fanfare, and when The Forte IV broke up, Ernie met and auditioned for Six the Hard Way, a group of 3 singers/3 pieces which went on the road and stayed there all through 1967.
 When Six the Hard Way broke up, Ernie and Chuck Girard went back to Pasadena where Chuck started writing, and eventually Chuck Girard, Jack Schaeffer, Ernie and a couple of Chuck's friends recorded two demos, "Feel the Love" and "Enchanted Forest."
 These were the beginnings of what many consider the first Christian Rock group.
 Earnshaw left this band in the spring of '68, joining BigFoot, which became Bill Medley's band in the summer of 1970.
In biology and immunology, an alphavirus belongs to the group IV Togaviridae family of viruses, according to the system of classification based on viral genome composition introduced by David Baltimore in 1971.
 Alphaviruses, like all other group IV viruses, have a positive sense, single-stranded RNA genome.
 There are thirty alphaviruses able to infect various vertebrates such as humans, rodents, fish, birds, and larger mammals such as horses as well as invertebrates.
 Transmission between species and individuals occurs mainly via mosquitoes making the alphaviruses a contributor to the collection of Arboviruses – or Arthropod-Borne Viruses.
 Alphavirus particles are enveloped, have a 70 nm diameter, tend to be spherical (although slightly pleomorphic), and have a 40 nm isometric nucleocapsid.
Clay is a 2008 Hip-hop musical loosely based on Shakespeare's "Henry IV, Parts 1 and 2".
 The central character, Sir John, is based on Falstaff.
 It was written and performed by Matt Sax.
 The first performance was at the Edinburgh Festival Fringe.
Falling in Reverse is an American rock band based in Las Vegas, Nevada and formed in 2008, signed to Epitaph Records.
Sorry to Bother You is the sixth album by political hip hop group The Coup, which was released on October 30, 2012, on ANTI-.
 It's the group's first album where no samples are being used and all tracks are made by live instrumentation.
 It debuted at #194 on the US "Billboard" 200 chart, selling about 2000 copies in the first week.
 At Metacritic it received an average score of 80, which indicates "generally favorable acclaim", based on 15 reviews.
 PopMatters named it the year's fifth best hip hop album in its year-end list and commented that it "just might stump The Powers That Be, to the point that even the “one-percent” will want to dance to it".
 Four tracks off the album have been released as official videos including first single The Magic Clap, Land Of 7 Billion Dances, The Guillotine and Your Parents' Cocaine
Le jeune Henri ("Young Henri") is an opera by the French composer Étienne Méhul.
 It takes the form of a "comédie mêlée de musique" (a type of "opéra comique") in two acts.
 The libretto, by Jean-Nicolas Bouilly, is based on an episode from the life of King Henri IV of France.
 It was first performed on 1 May 1797 at the Théâtre Favart, Paris.
 The opera was a failure but the overture was warmly applauded and has often been performed separately since.
 Known as "La chasse du jeune Henri" ("Young Henri's hunt"), it is a piece of programme music describing the course of a hunt from dawn to the killing of the stag.