Editing Progressive rock (section)

===1990s–2000s===

====Third wave====
[[File:Porcupine Tree @ Poznan, Poland 2007 04.jpg|thumb|right|[[Porcupine Tree]] performing in 2007]]

A third wave of progressive rock bands, who can also be described as a second generation of neo-prog bands,{{sfn|Hegarty|Halliwell|2011|p=199}} emerged in the 1990s. The use of the term "progressive" to describe groups that follow in the style of bands from ten to twenty years earlier is somewhat controversial, as it has been seen as a contradiction of the spirit of experimentation and progress.{{sfn|Gill|1995|}}{{sfn|Hegarty|Halliwell|2011|p=19}} These new bands were aided in part by the availability of personal computer-based [[Digital audio workstation|recording studios]], which reduced album production expenses, and the [[Internet]], which made it easier for bands outside of the mainstream to reach widespread audiences.{{sfn|Karnick|2003|}} Record stores specialising in progressive rock appeared in large cities.{{sfn|Gill|1995|}}

The [[Shred guitar|shred]] music of the 1980s was a major influence on the progressive rock groups of the 1990s.{{sfn|Gill|1995|}} Some of the newer bands, such as [[the Flower Kings]], [[Spock's Beard]] and [[Glass Hammer]], played a 1970s-style symphonic prog, but with an updated sound.{{sfn|Lucky|2000|p=47,127}} A number of them began to explore the limits of the CD in the way that earlier groups had stretched the limits of the vinyl LP.{{sfn|Hegarty|Halliwell|2011|p=200}}

====Progressive metal====
{{main|Progressive metal}}

{{Listen
| filename    = Dream Theater - A Change of Seasons (excerpt).ogg
| title       = "A Change of Seasons" by Dream Theater
| description = A multipart suite by Dream Theater that combines elements of progressive rock and heavy metal
| pos         = right
}}
Progressive rock and [[Heavy metal music|heavy metal]] have similar timelines. Both emerged from late-1960s psychedelia to achieve great early-1970s success despite a lack of radio airplay and support from critics, then faded in the mid-to-late 1970s and experienced revivals in the early 1980s. Each genre experienced a fragmentation of styles at this time, and many metal bands from the [[new wave of British heavy metal]] – most notably [[Iron Maiden]] – onwards displayed progressive rock influences.{{sfn|Hegarty|Halliwell|2011|pp=259–260}} [[Progressive metal]] reached a point of maturity with [[Queensrÿche]]'s 1988 concept album ''[[Operation: Mindcrime]],'' [[Voivod (band)|Voivod]]'s 1989 ''[[Nothingface (Voivod album)|Nothingface]]'', which featured abstract lyrics and a King Crimson-like texture, and [[Dream Theater]]'s 1992 ''[[Images and Words]]''.{{sfn|Hegarty|Halliwell|2011|pp=260–262}}

Progressive rock elements appear in other metal subgenres. [[Black metal]] is conceptual by definition, due to its prominent theme of questioning the values of Christianity.{{sfn|Hegarty|Halliwell|2011|p=264}} Its [[Death growl|guttural]] vocals are sometimes used by bands who can be classified as progressive, such as [[Mastodon (band)|Mastodon]], [[Mudvayne]] and [[Opeth]].{{sfn|Hegarty|Halliwell|2011|pp=264, 266}} [[Symphonic metal]] is an extension of the tendency towards orchestral passages in early progressive rock.{{sfn|Hegarty|Halliwell|2011|pp=266–267}} Progressive rock has also served as a key inspiration for genres such as [[post-rock]],<ref name="allen">{{cite web |last=Allen |first=Jim |title=From Tull To Tortoise: Post-Rock's Proggy Past |work=CMJ New Music |url=http://www.e-prog.net/genre/cmj_essay.htm |access-date=20 June 2013 |url-status=dead |archive-url=https://web.archive.org/web/20130203052506/http://www.e-prog.net/genre/cmj_essay.htm |archive-date=3 February 2013}}</ref> [[post-metal]] and [[avant-garde metal]],<ref name="caramanica">{{cite news|last=Caramanica|first=Jon |title=The alchemy of art-world heavy metal|newspaper=International Herald Tribune|date=20 September 2005}}</ref> [[math rock]],<ref name="tudor">{{cite news |last=Tudor |first=Colin |title=CULTURE: Between rock and a harder place; The hardcore stops and starts of the Dillinger Escape Plan prove that rock is still evolving |newspaper=The Birmingham Post |place=England |date=9 December 2003}}</ref> [[power metal]] and [[neo-classical metal]].<ref name="miers">{{cite news |last=Miers |first=Jeff |title=Dance of Death" (Review) |newspaper=The Buffalo News |date=3 October 2003}}</ref>

====New prog====
{{Distinguish|Neo-prog}}

'''New prog''' describes the wave of progressive rock bands in the 2000s who revived the genre. According to ''[[Entertainment Weekly]]''{{'}}s Evan Serpick, "success stories like [[System of a Down]] and up-and-comers like the [[Dillinger Escape Plan]], [[Lightning Bolt (band)|Lightning Bolt]], [[Coheed and Cambria]], and [[the Mars Volta]] create incredibly complex and inventive music that sounds like a heavier, more aggressive version of '70s behemoths such as Led Zeppelin and King Crimson."<ref>{{Citation|last=Serpick|first=Evan|date=9 May 2005|title=Prog Rocks Again|publisher=Entertainment Weekly|url=https://ew.com/article/2005/05/09/prog-rock-makes-huge-comeback/|access-date=25 May 2012|archive-date=14 January 2012|archive-url=https://web.archive.org/web/20120114232406/http://www.ew.com/ew/article/0,,1058164,00.html|url-status=live}}</ref>