Question: What type of genre do The Bluebells and Monoral have in common?

full_context: Document 1: Flow (band): Flow is a Japanese rock band, formed in 1998 and signed on to Sony Music Japan's Ki/oon Music label. Flow is a five-piece band made up of two vocalists, a drummer, a bassist, and a guitarist. As of February 2017, the band has released 31 singles and 10 studio albums. Their songs have been featured in the opening sequences of several anime series.
Document 2: Monoral: Monoral is a Japanese alternative rock band signed to Sony Music Japan. The band consists of Anis Shimada on lead vocals and guitar and Ali Morizumi on bass and guitar.
Document 3: Scottish music (1980–1989): During the 1980s, Scottish music featured post-punk bands exemplified by Simple Minds and Josef K, and bands like Runrig that remained closer to the Scottish dance music tradition. Folk rock or Celtic rock bands launched in the 1980s included The Waterboys and The Proclaimers. Among the folk singers of the time were Dick Gaughan and Bill Drummond, and Ewan MacColl who died in 1989.
Document 4: Deka Moni: Deka Moni (デカモニ。 ) was a Japanese group consisting of one member, volleyball player Motoko Obayashi, presumably chosen because of her height. She appears four times on the single cover to give the impression of a group with four members. Although Deka Moni is not a part of Hello! Project, Tsunku produced the single, which features a cover of Minimoni's "Jankenpyon!" as its c/w track.
Document 5: One Ok Rock discography: Japanese rock band One Ok Rock has released eight studio albums, two EPs, 22 singles, seven video albums, six cover versions, and 32 music videos. One Ok Rock was formed in Tokyo, Japan in 2005, currently consists of Takahiro Moriuchi (vocals), Toru Yamashita (guitar/leader), Ryota Kohama (bass), and Tomoya Kanki (drums).
Document 6: The Bluetones: The Bluetones are an English indie rock band, formed in Hounslow, Greater London, in 1993. The band's members are Mark Morriss on vocals, Adam Devlin on guitar, Scott Morriss on bass guitar, and Eds Chesters on drums. A fifth member, Richard Payne, came on board between 1998 and 2002. The band was originally named "The Bottlegarden".
Document 7: The Electrics: The Electrics are a Celtic rock band from Dumbarton, Scotland. They formed in 1988 when former Infrapenny members Sammy Horner (vocals and bass guitar) and Paul Baird (guitar) asked drummer Dave McArthur and sax/keyboard player Allan Hewitt to play a gig at Glasgow's Impact Festival. The band released a self-financed cassette album, "Views in Blues", in 1989. Following this recording the band evolved a celtic rock sound, heavily influenced by The Waterboys and The Pogues. Subsequent recordings included "Vision and Dreams" (1990) which was distributed by Word Records, and "Big Silent World" (1993), on Germany's Pila Music label.
Document 8: One Ok Rock: One Ok Rock, stylized as ONE OK ROCK (pronounced in Japanese as "one o'clock"), is a Japanese rock band formed in Tokyo, Japan in 2005. The band currently consists of Takahiro Moriuchi (vocals), Toru Yamashita (guitar/leader), Ryota Kohama (bass), and Tomoya Kanki (drums).
Document 9: The Waterboys: The Waterboys are a Scottish/Irish folk rock band formed in Edinburgh in 1983 by Scottish musician Mike Scott. The band's membership, past and present, has been composed mainly of musicians from Scotland and Ireland with Edinburgh, Dublin, Spiddal, New York and Findhorn, serving as homes for the group. Mike Scott has remained as the only constant member throughout the band's career. They have explored a number of different styles, but their music is mainly a mix of Celtic folk music with rock and roll. They dissolved in 1993 when Scott departed to pursue a solo career. They reformed in 2000, and continue to release albums and tour worldwide. Scott emphasises a continuity between The Waterboys and his solo work, saying that "To me there's no difference between Mike Scott and the Waterboys; they both mean the same thing. They mean myself and whoever are my current travelling musical companions."
Document 10: The Bluebells: The Bluebells were a Scottish indie rock band, active between 1981 and 1986 (later briefly reforming in 1993, 2008–2009 and 2011).
Document 11: The Associates (band): The Associates were a Scottish rock act, formed in Dundee in 1979 by singer Billy Mackenzie and guitarist Alan Rankine. The group first gained recognition after releasing an unauthorized cover of David Bowie's "Boys Keep Swinging" in 1979, which landed them a contract with Fiction Records. They followed with their debut album "The Affectionate Punch" in 1980 and the singles collection "Fourth Drawer Down" in 1981, both to critical praise.
Document 12: J-rock: Japanese rock (Japanese: 日本のロック , Hepburn: Nihon no Rokku ) , sometimes abbreviated to , is rock music from Japan. Influenced by American and British rock of the 1960s, the first rock bands in Japan performed what is called Group Sounds, with lyrics almost exclusively in English. Folk rock band Happy End in the early 1970s are credited as the first to sing rock music in the Japanese language. Punk rock band the Blue Hearts and heavy metal group X Japan, led Japanese rock bands in the late 1980s and early 1990s by achieving major mainstream success. Japanese rock music has become a cult worldwide, being widely known in Asia and has survived through decades competing with its contemporary derivative local style J-pop.
Document 13: Inoran: Kiyonobu Inoue (井上 清信 , Inoue Kiyonobu , born on September 29, 1970 in Hadano, Kanagawa) , known exclusively by his stage name Inoran, is a Japanese musician, singer and songwriter. He is best known as the rhythm guitarist and a co-founder of the rock band Luna Sea. He started his solo career in 1997 and when Luna Sea disbanded in 2000, he formed Fake? with Oblivion Dust vocalist Ken Lloyd a year later. Then in 2005 when leaving Fake? he founded Tourbillon with Luna Sea vocalist Ryuichi Kawamura and Hiroaki Hayama. He has recently rejoined Luna Sea as they reunited in 2010, and in 2012 formed Muddy Apes with bassist Taka Hirose and support guitarist Dean Tidey, both from Feeder, and 8otto's vocalist Maeson.
Document 14: Eight Bells (band): Eight Bells is an American experimental metal band based in Portland, Oregon. It was formed by guitarist Melynda Jackson after SubArachnoid Space disbanded in 2011. She was joined by bassist Haley Westeiner and SubArachnoid Space drummer Christopher Van Huffel. They describe their music as expressionistic experimental metal. Their debut album, "The Captain's Daughter", was released 19 February 2013 by Seventh Rule Recordings. The band toured in April 2013 to promote the album. Their follow-up, "Landless", was released on February 12, 2016. They toured with Voivod and Vektor in the Northeastern United States in support of the album. In August 2016, Jackson announced a new lineup with Dan Barone replacing Westeiner on Bass, and the addition of Melynda Amann on synth and vocals.
Document 15: Sophia (Japanese band): Sophia (stylized as SOPHIA) was a Japanese rock band formed in 1994 by vocalist Mitsuru Matsuoka, guitarist Kazutaka Toyota, bassist Yoshio Kuroyanagi, drummer Yoshitomo Akamatsu and keyboardist Keiichi Miyako. Currently signed to Avex Trax since 2011, they made their major debut in 1995 on Toy's Factory. They changed over to Toshiba EMI in 2004, and Universal Music Japan in 2009.
ground_truth: rock