Question: A music group whose members are already successful as solo artists, such as Serpentine Dominion, is called what?
Context: Serpentine Dominion is an American extreme metal supergroup consisting of Killswitch Engage guitarist Adam Dutkiewicz, Cannibal Corpse vocalist George "Corpsegrinder" Fisher and former The Black Dahlia Murder drummer Shannon Lucas.  They released their debut album on October 28, 2016. Stitch London (previously "Stitch and Bitch London") is a knitting group in London, England, who meet weekly in various venues across central London to knit in public.  It is also a virtual knitting group whose members join via newsletter, Facebook, Ravelry, and Twitter.  Its members number in their thousands and it has a global membership despite being based in London. A supergroup is a music group whose members are already successful as solo artists or as part of other groups or well known in other musical professions.  Usually used in the context of rock and pop music, the term has been applied to other musical genres such as The Three Tenors in opera. Zenji Flava is a common nickname for Zanzibari hip hop, a genre that began to develop in the 1990s.  Cool Para said to be the first rapper to pioneer Zenji Flava during the 90s.  He was using Saleh Jabri's tape to rap on some local shows in Zanzibar until 1996 when he teamed-up with another rapper named Cool Muza together with others they formed a rap group called "Struggling Islanders.  They made their debut single "Historia" in early 1997.  Though the group short-lived and Cool Para and Muza both went to pursue a solo career.  Cool Para was the first rapper in Zanzibar and Tanzania mainland to make rap and taarab fusion called taarap.  With it he went to record a song with the most prominent taarab music band widely known as the East African Melody Modern Taarab, the song was known as "Loo Umezoea" which was released early 2000.  He also did "Kwenye Mataa" with the same taarab band in 1998.  Before Cool Para, there was also another short-lived crew named Contish.  The group consisted with two members Abdul and Hakim.  They released their only album called "Mabishoo" (93).  The album was available all over Zanzibar and Tanzania.  They were using Swahili lyrics over ragga instrumentals such as 'Tingaling' by Shabba Ranks.  Sam,e style as Saleh J. Sometimes later they disbanded and Kim went on pursue a solo and released an album called Kim Pekee.  Abdul went to live abroad.  The name is made of "zenji", which is slang for "Zanzibar", and "flava", which is a corruption of "flavour", thus meaning "of Zanzibari taste".  As with bongo flava, i.e., Tanzanian mainland's hip hop, zenji flava is usually sung in swahili; the main difference between the two subgenres is that Zanzibari hip hop also reflects some influence of taarab, and thus indirectly of Arab music and Indian music.  Notable zenji flava artists include Ali Haji.  As Zenji flavour goes on it find itself as a sub part of Bongo flava as it has influence from the young generation of artists who want to cop with Bongo flava.  like Offside trick, 2 berry now is separated to form two solo artists（Berry black and Berry white）, Wazenji kijiwe and Shaka zulu, others are East connection which was made up with almost seven groups of artist including Offside trick Brooklyn, Four nature, Jumbo camp, Queen love, and K jam.  It was in this time that Zenji flava was modernized with rapid growth in the number of artists. This is a list of supergroups, music groups whose members are already successful as solo artists or as part of other groups or well known in other musical professions.  Usually used in the context of rock and pop music, the term has been applied to other musical genres such as The Three Tenors in opera. The Artistas Reunidos was a project created in 1997 by the solo artists Jair Oliveira, Wilson Simoninha, Luciana Mello, Max de Castro, Pedro Mariano, and Daniel Carlomagno.  It lasted until 1998, when they recorded the album "Projeto Artistas Reunidos" in São Paulo, Brazil.  For a little more than a year, these "artists united" shared the stage with many important Brazilian musicians such as Jair Rodrigues, Djavan, Ed Motta, Sandra de Sá, Vicente Barreto, and many others.  The project ended and the 6 artists who started the project each followed their own career and are now popular as solo artists in "Música popular brasileira", a term meaning "Brazilian Popular Music". Pigasus was a 145-pound (66-kg) domestic pig who was nominated for President of the United States as a theatrical gesture by the Youth International Party on August 23, 1968, just before the opening of the Democratic National Convention in Chicago, Illinois.  The youth-oriented party (whose members were commonly called "Yippies") was an anti-establishment and countercultural revolutionary group whose views were inspired by the free speech and anti-war movements of the 1960s, mainly the opposition to United States involvement in the Vietnam War. The Inkwell Award, sometimes shortened to the Inkwells, is a trophy given in the field of inking in American comic books.  The awards were partially named after the Yahoo group whose members include many in the inking community, and after the personal website name of organization founder Bob Almond.  The awards concept was created in an "Inkblots" column by Almond in "Sketch Magazine" #35 in 2007, which saw print in 2008 after the group formation.  The mission statement is, "To promote and educate about the craft of comic book inking and to show recognition for ink artists." The Jackson family is an American family of singers who originated in Gary, Indiana.  Performing as members of The Jackson 5 and as solo artists, the children of Joseph Walter and Katherine Esther Jackson were very successful in the field of popular music from the late 1960s onwards.  As a group, the eldest sons Jackie, Tito, Jermaine, Marlon, Randy and Michael, made the family's reputation, facilitating the subsequent success of siblings Rebbie, La Toya, and Janet.  The Jackson 5 became known as the "First Family of Soul" (a title first held by the Five Stairsteps).  The continued success of Michael and Janet's careers as solo artists led the Jacksons to become known as the "Royal Family of Pop".  All nine of the Jackson siblings have gold records to their credits with La Toya holding the distinction of being the first Jackson sister to attain one (awarded by France's SNEP for "Reggae Night", a song she co-wrote for Jimmy Cliff). In music, a virtual band (also called a virtual group, cartoon group, or cartoon band) is any group whose members are not corporeal musicians, but animated characters.  Although it mostly deals with fiction, the band itself doesn't fall under that category, as they exist outside a television and film universe.  The music is recorded (and, in the case of concerts, performed) by human musicians and producers, while any media related to the virtual band, including albums, video clips and the visual component of stage performances, feature the animated line-up; in many cases the virtual band members have been credited as the writers and performers of the songs.  Live performances can become rather complex, requiring perfect synchronization between the visual and audio components of the show.
Answer: A supergroup