Editing Insomniac (Green Day album) (section)

===Musical style===
{{listen
|filename=Geek Stik Breath.ogg
|title="Geek Stink Breath"
|description="[[Geek Stink Breath]]" is the lead single from the album.
|filetype=[[Ogg]]}}
{{listen
|filename=Brain Stew Jaded.ogg
|title="Brain Stew/Jaded"
|description="[[Brain Stew/Jaded]]" is the third single from the album.
|filetype=[[Ogg]]}}
David Browne of ''Entertainment Weekly'' described ''Insomniac'' as "14 slices of hearty anarchy, played with a follow-the-bouncing-spitball compactness and vigor."<ref name=EW/> Ian Winwood of ''[[Kerrang!]]'' wrote of the album's "master class in buzzsaw efficiency, the songs are so economical, not to mention harsh, that the removal of even a single chord would cause each composition to collapse in on itself," calling it "the album on which its creators lost their baby teeth."<ref name="Winwood">{{cite web |last1=Winwood |first1=Ian |title=Green Day: The Inside Story of Insomniac |url=https://www.kerrang.com/features/green-day-the-inside-story-of-insomniac/ |website=Kerrang |access-date=October 22, 2019 |date=2018}}</ref> Music journalist Andrew Earles said producer Rob Cavallo "helped the band make huge guitar walls out of riffs and grow away from the shiny-happy locker-room dip-shittery of ''Dookie''."<ref>{{cite book |last1=Earles |first1=Andrew |title=Gimme Indie Rock: 500 Essential American Underground Rock Albums 1981-1996 |date=September 15, 2014 |publisher=Voyageur Press |page=131 }}</ref>

The album features bleaker, more pessimistic lyrics than those of ''Dookie''.<ref name=EW/> However, ''Rolling Stone'' noted that the lyrics exemplify "cold-eyed realism, not trendy nihilism or bleak despair."<ref name=RS/> Armstrong's vocal delivery on the album has been described as an "adenoidal vocal whine."<ref name=RS/>