Question: Grinderman and DIIV, are bands of which mutual genre?

Context paragraphs:
DIIV: DIIV is an American rock band from Brooklyn, New York City, formed in 2011.  The band consists of Zachary Cole Smith (vocals, guitar), Andrew Bailey (guitar), Devin Ruben Perez (bass), Colin Caulfield (keyboards, guitar) and Ben Newman (drums).

Grinderman: Grinderman was an Australian-British rock band that formed in London, United Kingdom, in 2006.  Since its inception, the band included Nick Cave (vocals, guitar, organ, piano), Warren Ellis (tenor guitar, electric mandolin, violin, viola, guitar, backing vocals), Martyn P. Casey (bass, guitar, backing vocals) and Jim Sclavunos (drums, percussion, backing vocals).

Celtic metal: Celtic metal is a subgenre of folk metal that developed in the 1990s in Ireland.  As the name suggests, the genre is a fusion of heavy metal and Celtic rock.  The early pioneers of the genre were the Irish bands Cruachan, Primordial and Waylander.  The genre has since expanded beyond Irish shores and is known to be performed today by bands from numerous other countries.

Emo: 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.

MeteorCity: MeteorCity Records is an American record label based in Idaho.  MeteorCity was founded in 1997 by Jadd Shickler and Aaron Emmel in Albuquerque, New Mexico.  With the release of its compilation album "Welcome to MeteorCity" showcasing young unsigned Kyuss-like bands, MeteorCity helped launch the stoner rock genre and many of the genre's first bands, plus side projects from members of well-known bands including The Atomic Bitchwax and Hermano.  From 2007 through the present the label has been owned and operated by All That is Heavy as their in-house record label.  All That is Heavy is the first online record store dedicated exclusively to Stoner rock, doom metal, sludge metal, drone metal and psychedelic rock.

Barry Adamson: Barry Adamson (born 11 June 1958) is a Mercury nominated English pop and rock musician, composer, writer, photographer and filmmaker who has worked with rock bands such as Magazine, Visage, The Birthday Party, Nick Cave and the Bad Seeds, and the electro musicians Pan sonic.  Adamson has also remixed Grinderman, The Jon Spencer Blues Explosion and Depeche Mode.  He created the seven-minute opus "Useless (Escape From Wherever: Pts.  1 & 2)" remix for the latter band in 1997.  He has also worked on the soundtrack for David Lynch's "Lost Highway", and released numerous solo recordings.

Stoner rock: 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.

List of avant-garde metal artists: 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.

Morbid Angel: 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.

Zachary Cole Smith: Zachary Cole Smith (born November 7, 1984) is an American musician, model and music video director, best known for being the frontman of DIIV.  He first began playing in bands like Soft Black, Darwin Deez and Beach Fossils after moving to New York City in the late 2000s.  Smith released his debut studio album with DIIV, "Oshin", in 2012, which combined elements of krautrock, post-punk and shoegaze.  He has directed music videos for DIIV and Sky Ferreira.  Outside of his work in the music industry, Smith has modeled for Saint Laurent on multiple occasions.  DIIV's second studio album, "Is the Is Are", was released on February 5, 2016.

Supporting paragraphs: Grinderman DIIV
Answer: rock