Question: What banned formed in Olympia, Washington headlined the Decibelle music and cultural festival?

Context articles: Estrojam's Decibelle Music and Culture Festival
Seorak Cultural Festival
Uyghur Doppa Cultural Festival
World Cultural Festival
National Cultural Festival
New England Indonesian Festival
The 25th National Cultural Festival Okayama 2010
Gossip (band)
Mood Indigo (festival)
Rendezvous (festival)

Decibelle (formerly Estrojam) is a 501c3 NFP music and culture festival that promotes equality and was established in 2003.
 Past headliners have included, Wanda Jackson (First Lady of Rock who toured with Elvis in the 1950s and 1960s), Nina Hagen, Concrete Blonde, Cat Power, The Gossip, Peaches, Amy Ray of the Indigo Girls and Margaret Cho.
 The hip hop, post punk, disco, and dance-punk band ESG played their final show on Friday, September 21, 2007 at Chicago's Abbey Pub, during the Decibelle festival.
The Seorak Cultural Festival is a local cultural festival annually held every end of October in Sokcho city, Gangwon Province, South Korea.
 Sokco is a tourism city surrounded by Mt. Seoraksan National Park and the Sea of Japan (East Sea), so many of the cultural events there are mostly related to the environment and local specialties such as squid.
Uyghur Doppa Cultural festival, also called Doppa Cultural Festival, Doppa festival, Doppa Day, Uyghur Doppa Medeniyet Bayrimi, Doppa bayrimi, 维吾尔花帽文化节，花帽节，朵帕节 in Chinese，or Uygur Doppa Kültür Festivali in Turkish, is one of the most prominent cultural festivals for Uyghur people living in Xinjiang Uyghur Autonomous Region, China.
World Cultural Festival (WCF) was held on the Yamuna floodplains in New Delhi from 11 March 2016 to 13 March 2016.
 It was organised by Ravi Shankar to celebrate the Art of Living foundation’s 35 years in service.
 Various political leaders including Rajnath Singh, Sushma Swaraj, Shivraj Singh Chouhan, Devendra Fadnavis, Raman Singh and Manish Sisodia attended the event on 12 March 2016.
 The last day of the cultural extravaganza was attended by many high-profile BJP leaders including Arun Jaitley, Ravi Shankar Prasad, Venkaiah Naidu, Lok Sabha Speaker Sumitra Mahajan and Delhi Chief Minister Arvind Kejriwal.
 The National Green Tribunal (NGT) allowed the Art of Living of Sri Sri Ravi Shankar to hold the festival after paying a compensation of () .
 Initially, around 1,700 officials were deployed for traffic management for the World Cultural Festival and around 300 were on standby for the other events to be held during the same time.
The National Cultural Festival (国民文化祭 , Kokuminbunkasai ) (sometimes shortened to Kokubunsai (国文祭 ) ) is Japan’s largest cultural festival which aims to provide the Japanese public with the opportunity to present various cultural activities.
 There is an emphasis on activities by local performers to motivate individuals to participate in cultural activities, encourage culture, inspire the development of local culture and enrich the lives of the people.
 These events are hosted by the Agency for Cultural Affairs and the prefectural or municipal government, cultural organizations or other related organizations.
 Shin Koyamada played the lead character of Makibi featured during the on-stage opening ceremony of Okayama 2010 (The 25th National Cultural Festival Okayama 2010), which was held in Momotaro Arena on October 30, 2010.
The New England Indonesian Festival is an annual cultural festival held at Copley Square located in Boston, Massachusetts.
 The first festival was held on September 14, 2013.
 It was the first and biggest Indonesian cultural festival ever held in the East Coast area, with more than 5,000 audience and hundreds of performers.
The 25th National Cultural Festival Okayama 2010 (第２５回国民文化祭・おかやま２０１０ ) is The National Cultural Festival to be held in Okayama Prefecture, Japan between October 30 and November 7, 2010.
 The festival will host 68 events such as the opening festival, orchestral music, choral music, brass band music, drama, literary, arts, dance, traditional Japanese music are held throughout the festival in all of Okayama Prefecture's cities, towns and villages.
Gossip (previously known as "The Gossip") was a three-piece American indie rock band formed in 1999 in Olympia, Washington.
 For most of their career, the band consisted of singer Beth Ditto, multi-instrumentalist Brace Paine and drummer Hannah Blilie.
 After releasing several recordings, the band broke through with their 2006 studio album, "Standing in the Way of Control" (2006).
 A follow-up, "Music for Men", was released in 2009.
 The band played a mix of post-punk revival, indie rock, and dance-rock.
 Their last album, "A Joyful Noise", was released in May 2012.
Mood Indigo, also known as MoodI or MI, is the annual cultural festival of the Indian Institute of Technology Bombay.
 It is an event usually held towards the end of December every year.
 The 2015 edition of Mood Indigo witnessed a footfall of more than 1,31,000 students from over 1650 colleges from across the country.
 Started in 1971 by a group of enthusiastic IITians, Mood Indigo, now in its 46th edition, has become the largest college cultural festival in the country.
 Over the years, MI has also attracted considerable media attention and numerous well-known sponsors.
Rendezvous, famously known as RDV is the annual Cultural Festival of the Indian Institute of Technology (IIT), Delhi.
 It is a four-day-long event held at the end of October every year, is a student-run non-profit organisation.
 It was started in 1976, and in the past 40 years, it has established its name as to be the best cultural festival in India.
 On the Ruby Anniversary in 2016, Rdv hosted 225 events, and had a footfall of over 70,000, 13,000+ participants and 170+ artists from more than 20 countries.
 The team of Rendezvous consists of student volunteers who work to promote creativity and intellectualism, and it symbolizes a place to be together and celebrate, as its name suggests.