G.a.s. Drummers was a melodic hardcore band formed in Jerez de la Frontera, Spain at the end of 1997 by three teenagers who stood out from their other students due to their colourful hair dies and their taste in the california punk rock bands such as Bad Religion, Operation Ivy, NOFX, Lagwagon, The Descendents etc.
 Original members from other small local bands Dani Llamas (guitar and vocals), Pakomoto (Bass and vocals) and Rafa Camison (Drums) started playing together and composing their own music and after one year of sending demos around the country they got put as the opening act for Swedish Punk Rock band Randy on their Spanish tour.
 A tour that took the band through the whole country helping a lot of Spanish kids discover that there were actually Spanish bands capable of sounding as good as some of their favorite American bands.
 This lead immediately the band to sign to a young record label called Slide Chorus Records a young emerging record label from Madrid which would start releasing albums for other Spanish Punk Rock bands.
 This first release titled Proud To Be Nothing hit the streets at the end of 1999 and was presented on their first European tour which covered Spain, Great Britain, France and the Netherlands amongst Spanish punk rock legend[P.P.M.
The Beautiful South was an English pop/rock group formed in 1988 by two former members of the Hull group the Housemartins—Paul Heaton and Dave Hemingway—both of whom performed lead and backing vocals.
 Other members throughout the band's tenure were former Housemartins roadie Sean Welch (bass), Dave Stead (drums) and Dave Rotheray (guitar).
 After the band's first album (recorded as a quintet), they were joined by a succession of female vocalists, all of whom performed lead and backing vocals alongside Heaton and Hemingway – Briana Corrigan for albums two and three after appearing as a guest vocalist on one, followed by Jacqui Abbott for the fourth through seventh albums, and finally Alison Wheeler for the final three Beautiful South albums.
Susumu Hirasawa (平沢 進 ) (born April 1, 1954) is a Japanese musician and composer.
 In the fifth year of elementary school, Hirasawa took up the electric guitar, inspired by the surf and instrumental rock bands he heard on the radio and on TV, later joining his junior high school's band.
 In 1973 he formed Mandrake, a progressive rock band that incorporated elements from heavy metal and krautrock.
 Being one of the few Japanese progressive rock bands of its time, Mandrake achieved little success and released no albums during its lifetime.
 After discovering punk rock and working on synthesizer-heavy projects, Hirasawa felt that progressive rock became just for entertainment and decided to reform the band as the electronic rock band P-Model in 1979.
 Originally met with success, they turned to decidedly uncommercial post-punk and experimental rock after Hirasawa went through an averse reaction to his fame.
 With Hirasawa at the forefront, the band went through various lineups and achieved some popularity in the Japanese independent music scene.
Haitian rock, or rock kreyòl, started as rock n roll in Haiti in the early 1960s.
 It was played by rock bands called "yeye" bands.
 The name "yeye" derives from the Beatles lyrical verse, "yeah, yeah, yeah", which took off in the United States and was listened to by upper class Haitian families who had access to the radio.
 Young Haitians formed small electric guitar-based bands.
 These "yeye" rock bands were short-lived, as the addition of "compas" to their repertoires resulted in a sound was called mini-jazz, or "mini-djaz" in creole.
The Housemartins were an English Alternative rock band formed in Hull who were active in the 1980s.
 Many of the Housemartins' lyrics were a mixture of Marxist politics and Christianity, reflecting singer Paul Heaton's beliefs at the time (the back cover of "London 0 Hull 4" contained the message, "Take Jesus – Take Marx – Take Hope").
 The group's cover version of the Isley Brothers' "Caravan of Love" was a UK Number 1 single in December 1986.
Japanese rock (Japanese: 日本のロック , Hepburn: Nihon no Rokku ) , sometimes abbreviated to , is rock music from Japan.
 Influenced by American and British rock of the 1960s, the first rock bands in Japan performed what is called Group Sounds, with lyrics almost exclusively in English.
 Folk rock band Happy End in the early 1970s are credited as the first to sing rock music in the Japanese language.
 Punk rock band the Blue Hearts and heavy metal group X Japan, led Japanese rock bands in the late 1980s and early 1990s by achieving major mainstream success.
 Japanese rock music has become a cult worldwide, being widely known in Asia and has survived through decades competing with its contemporary derivative local style J-pop.
Hellogoodbye (sometimes styled as hellogoodbye) is a pop rock band that was formed in Huntington Beach, California in 2001 by singer Forrest Kline.
 They were signed to Drive-Thru Records and released their first full-length album "Zombies!
 Aliens!
 Vampires!
 Dinosaurs!
" in 2006, in addition to their previously released EP "Hellogoodbye" and DVD "OMG HGB DVD ROTFL".
 In 2010, the band released "Would It Kill You?
" on their label Wasted Summer Records.
 The album was released in the United Kingdom and Europe by LAB Records on the 14 March 2011.
 Hellogoodbye released their third album, Everything is Debatable, on October 29, 2013, while touring as the opening act for Paramore's The Self-Titled Tour.
The Bamboozle Road Show 2010 was the third Bamboozle Road Show, an American nationwide concert tour based on the Bamboozle Festival.
 Each concert in the tour featured a main stage for well-known bands and a second stage for lesser known bands to perform on.
 The bands who performed on the main stage on the 2010 tour were headliners All Time Low, Boys Like Girls, LMFAO and Third Eye Blind, supported by Good Charlotte, Hanson, Forever the Sickest Kids, Hellogoodbye and Cartel.
 Tickets went on sale on to the public on 6 March 2010.
 The tour included 24 shows in 17 states from 21 May to 27 June 2010 after 2 dates were cancelled due to scheduling issues.
 All Time Low was banned from one Texas show after they criticized the way their fans were handled at a previous show when some fans were pepper sprayed by police for fighting over a t-shirt thrown into the crowd.
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.
Skate punk (also known as skate rock, skatecore and skate-thrash) is a skater subculture and a subgenre of punk rock music.
 Originally a genre of hardcore punk, skate punk changed into a more melodic genre of punk rock in the 1990s.
 The term usually describes the sound of 1990s punk rock bands that have a fast, melodic sound, and similar 21st-century punk rock bands.
 Skate videos have traditionally featured this fast style of punk rock.
 This played a big part in the coining of the term "skate punk".

Question: Are Hellogoodbye and The Housemartins both rock bands?
Answer: yes