Question: What style rock bands are the groups Muzzle and Hello Sleepwalkers?

Context articles: Muzzle (band)
Rock music of Canada
CLJ Records
Prison Bound
Hello Sleepwalkers
I Can Lick Any Sonofabitch in the House
Barrier Canyon Style
Bombay Rock
Demons (band)
Black Raven

Muzzle is an alternative rock band formed in 1994 by Ryan Maxwell, Wesley Nelson, Burke Thomas, and Greg Collinsworth.
 They have released two albums with Reprise Records: "Betty Pickup" in 1996 and "Actual Size" in 1999.
Rock music of Canada is a wide and diverse part of the general music of Canada, beginning with American and British style rock and roll in the mid-20th century.
 Since then Canada has had a considerable impact on the development of the modern popular music called rock.
 Canada has produced many of the genre's most significant groups and performers, while contributing substantively to the development of the most popular subgenres, which include pop rock, progressive rock, country rock, folk rock, hard rock, punk rock, heavy metal and indie rock.
CLJ Records is a German independent record label formed in 2006 specializing in Japanese visual kei style rock and metal bands.
 The label currently has 31 bands signed.
 CLJ is a sub division of Colosseum Music Entertainment and their head office is located in Nuremberg Germany.
 In cooperation with the Japanese/German tour promotion company Rock Identity, most of the groups with material released under CLJ Records will also perform live on tour throughout Europe.
Prison Bound is the second studio album by Social Distortion, was released in 1988.
 This is the first album with bass guitarist John Maurer and drummer Christopher Reece.
 It expands upon the punk sound of the band's highly regarded but commercially unsuccessful first album "Mommy's Little Monster" (1983) by adding elements of Johnny Cash style country and The Rolling Stones style rock and roll.
Hello Sleepwalkers (ハロー・スリープウォーカーズ ) is a five member Japanese alternative rock band from Okinawa formed in 2008.
 The band is signed to A-Sketch Music Label and have currently released three studio albums, one extended play, four single albums, and ten singles.
 They are best known for performing the opening theme song of the anime "Noragami", "Goya no Machiawase" (午夜の待ち合わせ , Midnight's Appointment ) .
I Can Lick Any Sonofabitch in the House is an American southern rock / punk / country band from Portland, Oregon.
 The group was formed in 2001 by singer-songwriter and former amateur boxer Michael Dean Damron, and their sound reflects a varied influence of heavy southern style rock, 1970s rock, country, blues, and punk rock.
 Lyrically the band is known for progressive political themes, speaking out against conservatives, gun rights advocates, and the Westboro Baptist Church among others, as well as for darker, country influenced songs about fear, loss, and death in modern America.
 They have been lauded for their high energy live performances driven by Damron's distinctive growl and the band's dueling lead guitar and harmonica.
Barrier Canyon Style (BCS) describes a distinctive style of rock art which appears mostly in Utah, with the largest concentration of sites in and around the San Rafael Swell and Canyonlands National Park, but the full range extend into much of the state and western Colorado.
 The term was first applied by Polly Schaafsma (The Rock Art of Utah, 1971) to describe a handful of similar sites known at the time, including several along Barrier Creek in Horseshoe Canyon (formerly known as Barrier Canyon).
 Barrier Canyon Style rock art panels are mostly pictographs (painted) but there are also several petroglyphs (pecked) in the style.
 These panels are believed to have been created during the archaic period (probably late archaic) and are estimated (from direct and indirect carbon 14 dates) to be somewhere in the range of 1500 to 4000 years old, possibly older -- clay figurines of a similar style found in Cowboy Cave (in a tributary canyon to Horseshoe Canyon) have been dated to over 7000 years old.
The Bombay Rock was a rock music venue located in Sydney Road, Brunswick, Victoria, Australia, which ran from 1977 to 1991 when was destroyed by a fire.
 The venue had previously been located in Bourke Street in the city under the name of the Bombay Bicycle Club.
 Operated by Joe Gualtieri, it was described in the 1980s as "...an old style rock barn ... with all the style and grace of a converted factory" and was to the working class, what "Billboard" was to the Middle Class.
Demons are a punk rock/garage punk band from Sweden.
 The band includes quotation marks in their name to differentiate themselves from other bands with a similar name.
 Their music has been described as "punk 'n' roll", but the band claims it should only be described as high-energy rock.
 Their musical style relies heavily on the energy derived from punk rock.
 Influences include 1960s garage rock bands such as The Sonics, The Standells and Shadows of Knight, The Velvet Underground, The Stooges and New York Dolls; and punk rock bands such as The Damned, The Heartbreakers and The Saints; and early hardcore punk bands such as Black Flag, Bad Brains and Dead Kennedys.
 "Demons" has often been compared to contemporary groups like New Bomb Turks, The Hellacopters and Electric Frankenstein.
Black Raven is a German band from Düsseldorf.
 Their music can be classified as rock and roll, more precisely as rockabilly or as Teddy boy style rock and roll.
 The name is taken from a rock and roll bar of the same name in London, England in the 1970s.