Question: What genre of music links the bands Catherine and X? 

Context articles: This Bike Is a Pipe Bomb
New wave of new wave
Catherine (alternative rock band)
Morbid Angel
Emo
Stoner rock
Zakhid
List of avant-garde metal artists
X (American band)
Aramis, or the Love of Technology

This Bike Is a Pipe Bomb was a folk punk band from Pensacola, Florida, United States.
 Their first recording was released in 1997 on Ghostmeat Records.
 Their later releases have been on Plan It X Records and No Idea Records, but now appear on their own label Plan-It X South.
 This Bike Is a Pipe Bomb initially started as a new wave band, with folk singer David Dondero on drums.
 They quickly switched to playing country music, but their punk roots were evident enough in their music that they became one of the premiere bands at the forefront of the folk-punk genre.
 They did several US tours, played at Geekfest, and toured to Europe.
The New Wave of New Wave (NWONW) was coined by music journalists to describe a subgenre of the British alternative rock scene in the early 1990s, in which bands displayed post-punk and new wave influences, particularly from bands such as The Clash, Blondie, Wire, and The Stranglers.
 The associated bands generally played guitar-based rock music often accompanied by keyboards.
 The movement was short lived and several of the bands involved were later linked with the more commercially successful Britpop, which it immediately preceded, and the NWONW was described by John Harris of "The Guardian" (one of the journalists who first coined the term) as "Britpop without the good bits".
 The "NME" played a major part in promoting and covering the genre, and promoted the "On" event, which featured many of the bands they had labelled NWONW.
Catherine was an alternative rock band from Chicago, Illinois that was active from 1985 to 1998.
 They were signed to TVT Records.
Morbid Angel is an American death metal band based in Tampa, Florida formed in 1983 by guitarist and sole remaining original member Trey Azagthoth, original vocalist and bassist Dallas Ward, and original drummer Mike Browning.
 Widely considered as one of the most influential bands in the genre and important in the transition of death metal from its thrash metal roots, they were one of the first bands to incorporate guttural vocals, up-tempo blast beats, atonality in guitar playing, multiple tempo changes and dark atmosphere.
 They have been described as one of "the most influential and emulated bands in death metal", alongside Cannibal Corpse, and have been cited as an influence by many later bands.
 They were also the first death metal band to experience mainstream success in connection with being signed to Giant Records in 1992, heavy rotation of their music videos on MTV, and having the music video for the song "God of Emptiness" shown on an episode of "Beavis and Butt-head".
 Their first four albums are considered classics in the genre.
Emo is a genre of rock music characterized by an emphasis on emotional expression, sometimes through confessional lyrics.
 It emerged as a style of post-hardcore from the mid-1980s hardcore punk movement of Washington, D.C., where it was known as emotional hardcore or emocore and pioneered by Washington, D.C. hardcore bands such as Rites of Spring and Embrace.
 However, as the genre was taken up by a new generation of musicians in the early 1990s, its sound and meaning shifted and changed and it was reinvented as a style of indie rock and pop punk by bands such as Jawbreaker, Sunny Day Real Estate, Weezer, and Jimmy Eat World.
 By the mid-1990s, numerous emo acts such as Braid, The Promise Ring, and the Get Up Kids emerged in the Midwestern and Central United States, and several independent record labels began to specialize in the genre.
 Meanwhile, a more aggressive style of emo, screamo, had also emerged, pioneered by the San Diego bands Heroin and Antioch Arrow.
Stoner rock or stoner metal is a rock music fusion genre that combines elements of heavy metal and/or doom metal with psychedelic rock and acid rock.
 The name references cannabis consumption.
 The term desert rock is often used interchangeably with the term "stoner rock" to describe this genre; however, not all stoner rock bands would fall under the descriptor of "desert rock".
 Stoner rock is typically slow-to-mid tempo and features a heavily distorted, groove laden bass-heavy sound, melodic vocals, and "retro" production.
 The genre emerged during the early 1990s and was pioneered foremost by the Californian bands Kyuss and Sleep.
ZAKHID (stylized as ZAXID, due to cyrillic 'X/x' is transliterated as 'KH/kh' from Ukrainian) (Ukrainian: Захід ) is an annual international music and art festival held in the middle of August near Lviv, Ukraine.
 ZAKHID was founded in 2009 as a festival of Ukrainian rock and ethno music.
 Later it has lost an attachment to some concrete music genre and was expanded by different foreign artists (among them such bands as Anti-Flag, Caliban, Clawfinger, Ektomorf, Everlast, Ill Niño, Kreator, Oomph!
, Zdob şi Zdub and others).
This is a list of avant-garde metal artists, regional scenes, and record labels.
 Avant-garde metal or avant-metal, also known as experimental metal, is a subgenre of heavy metal music loosely defined by use of experimentation and characterized by the use of innovative, avant-garde elements, large-scale experimentation, and the use of non-standard and unconventional sounds, instruments, song structures, playing styles, and vocal techniques.
 It evolved out of progressive rock and various forms of metal, including extreme metal, particularly the extreme subgenre death metal.
 Some early examples are the King Crimson releases "Larks' Tongues in Aspic" and "Red" in 1973 and 1974 respectively, and the 1976 Led Zeppelin album "Presence".
 The genre emerged in the early 1980s through the efforts of bands such as Celtic Frost and Voivod, who pioneered the genre.
 Other pioneers of avant-garde metal include Boris, Earth, Helmet, maudlin of the Well, Neurosis, Sunn O))), and Mr. Bungle.
 In the late 1990s, Misanthropy Records emerged as a promoter of Norwegian avant-garde metal until it folded in 2000, and, according to Jeff Wagner, in the late 1990s and early 2000s, a so-called "new wave of avant-garde metal" was spearheaded by The End Records.
 Some other record labels which promote avant-garde metal are Aurora Borealis, The Flenser, Holy Records, Hydra Head Records, Ipecac Recordings, Napalm Records, the Relapse Entertainment imprint of Relapse Records, Seventh Rule Recordings, and Southern Lord Records.
 In the United States, local avant-garde metal scenes have emerged in the San Francisco Bay Area, with bands such as Giant Squid, Grayceon, and Ludicra, Boston, with bands such as Isis, Kayo Dot, and maudlin of the Well and Seattle.
 According to the "New York Times", some regional scenes that developed in the mid-1990s included the cities of Tokyo, Los Angeles, and Oslo.
X is an American punk rock band, formed in Los Angeles in 1977, among the first wave of American punk.
 The original members are vocalist Exene Cervenka, vocalist/bassist John Doe, guitarist Billy Zoom and drummer D.J. Bonebrake.
 The band released seven studio albums from 1980 to 1993.
 After a period of inactivity during the mid to late 1990s, X reunited in the early 2000s, and currently tours.
Aramis, or the Love of Technology, was written by French sociologist/anthropologist Bruno Latour.
 "Aramis" was originally published in French in 1993; the English translation by Catherine Porter, copyrighted in 1996, ISBN  , is now in its fourth edition (2002).
 Latour describes his text as "scientifiction," which he describes as "a hybrid genre... for a hybrid task" (p. ix).
 The genre includes voices of a young engineer discussing his "sociotechnological initiation," his professor's commentary which introduces Actor-network theory (ANT), field documents - including real-life interviews, and the voice of Aramis—a failed technology ( p. x).