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

full_context: Document 1: Shin'ya Waku: Shin'ya Waku (深夜枠 , "Late Night Broadcast Slot") , also known by its English title The Midnight Broadcasting is a compilation album by Japanese rock band Tokyo Jihen, released on August 29, 2012. It predominantly compiled B-sides from the band's singles, as well as a DVD exclusive song and a previously unreleased song, "Tadanaranu Kankei".
Document 2: Muhyo &amp; Roji's Bureau of Supernatural Investigation: Muhyo &amp; Roji's Bureau of Supernatural Investigation
Document 3: R.E.M. discography: American alternative rock band R.E.M. released 15 studio albums ranging from 1983 to 2011, three live albums, 14 compilation albums, one remix album, one soundtrack album, 12 video albums, seven extended plays, 63 singles, and 77 music videos. Formed in 1980 by singer Michael Stipe, guitarist Peter Buck, bassist Mike Mills, and drummer Bill Berry, the band was pivotal in the development of the alternative rock genre. Their musical style inspired several other alternative rock bands and musicians, and the band became one of the first alternative rock acts to experience breakthrough commercial success. R.E.M. has sold over 85 million copies of their studio albums worldwide, making them one of the best-selling music artists of all-time.
Document 4: Muzzle (song): "Muzzle" is a song by American alternative rock band The Smashing Pumpkins from their third album, "Mellon Collie and the Infinite Sadness". It was one of the last songs written by Billy Corgan for "Mellon Collie", with the song's lyrics referring to what Corgan thought the public's perception was of him at the time. It was rumored to be the Smashing Pumpkins fifth and final single from this album, as is evidenced by the fact that a promotional single for the song was issued to radio stations worldwide. However, the song "Thirty-Three" was released as the fifth and final single instead.
Document 5: Malfunkshun: Malfunkshun is an alternative rock band formed on Easter Sunday in 1980 by Andrew Wood and his brother Kevin Wood and is often recognized as one of the "Founding Fathers of the grunge scene" or the "Godfathers of Grunge". They formed around the same time bands such as The U-Men (1981), Melvins (1983), Green River (1984) and Soundgarden (1984).
Document 6: The Rentals: The Rentals are an American rock band fronted by vocalist Matt Sharp, best known as the former bassist for Weezer. Sharp has been the only consistent member since the group's inception. The band is best known for their 1995 single "Friends of P." The Rentals released two albums, "Return of the Rentals" (1995) and "Seven More Minutes" (1999) on Maverick Records before quietly splitting in 1999 following a world tour. The group reformed in 2005 and have since released several EPs and a third full-length album, "Lost in Alphaville", which was released August 26, 2014, on Polyvinyl Records. Due to the revolving nature of studio and live collaborators, determining who is actually an official member of the group at any one point is difficult.
Document 7: Ryan Shupe &amp; the RubberBand: Ryan Shupe & the RubberBand is an American Rock / Bluegrass group founded in the mid-1990s in Ogden, UT. The band's current lineup comprises Ryan Shupe (fiddle, guitar, ukulele, mandolin, lead vocals), Roger Archibald (guitar, vocals), Craig Miner (banjo, bouzouki, mandolin, guitar, vocals), Josh Larsen (bass guitar, string bass, vocals), and Nate Young (drums, vocals). After recording four studio albums on their own independent record label, Ryan Shupe & The RubberBand were signed to Capitol Records in 2005. Their first album for Capitol, 2005's "Dream Big", produced a Top 40 hit on the U.S. "Billboard" Hot Country Songs charts in its title track. The second single from the album, however, failed to chart, and the band was dropped from Capitol. In 2008, the band signed to Montage Music Group and released the album Last Man Standing. After this, the band continued to tour nationally and promote their unique brand of music. In 2010, the band released the album "Brand New Shoes" on their own independent label. This album has many crowd favorites and highlights the cross-genre, acousti-jam sound they have become known for. The band is currently promoting their new album "We Rode On" which leans more into the Rock side of their musical arsenal and have released three videos to promote the upcoming release. These videos are for the songs The Sun Will Shine Again, We Rode On, and Just Say Yes.
Document 8: List of Foo Fighters band members: Foo Fighters is an American alternative rock band formed by multi-instrumentalist and vocalist Dave Grohl in 1994. After recording the album "Foo Fighters" alone, Grohl enlisted guitarist Pat Smear, bassist Nate Mendel and drummer William Goldsmith to join the band. This lineup recorded the second Foo Fighters album, 1997's "The Colour and the Shape", although most of Goldsmith's drum recordings were removed and re-recorded by Grohl for the release, after he left the band due to creative tensions. Goldsmith was replaced by Taylor Hawkins, and Franz Stahl replaced Smear after he also departed, although he only remained in the band for a short period and did not record an album with the group. The group's third album, "There Is Nothing Left to Lose", featured Hawkins on drums and was released in 1999.
Document 9: The Alter Boys: The Alter Boys is an American band from Ohio. The band includes members of the bands Dog Fashion Disco, Polkadot Cadaver, Unified Culture, Mudfoot, Original Pranksta, Venomin James, and Mushroomhead. Also featured in the band was Ryan Dunn of the television series Jackass. They play in various musical styles, and released their first album, "The Exotic Sounds of the Alter Boys", in March 2005. They were signed to the Fractured Transmitter record label, however in late February 2009 they were removed from the Fractured Transmitter site. Rotten Records re-released 'The Exotic Sounds of the Alter Boys' in January 2009. Though they never broke up, Smith has recently stated that The Alter Boys are "dead".
Document 10: One Ok Rock: One Ok Rock, stylized as ONE OK ROCK (pronounced in Japanese as "one o'clock"), is a Japanese rock band formed in Tokyo, Japan in 2005. The band currently consists of Takahiro Moriuchi (vocals), Toru Yamashita (guitar/leader), Ryota Kohama (bass), and Tomoya Kanki (drums).
Document 11: Break of Dawn (Do As Infinity album): Break of Dawn is the debut album by Do As Infinity, released in 2000. This is the only album cover where Dai Nagao is included in along with the other two members. The song "Raven" was used as the ending theme for the Japanese horror film "Uzumaki".
Document 12: Sleepwalking (Memphis May Fire album): Sleepwalking is the debut full-length studio album by American metalcore band Memphis May Fire. The album was released through Trustkill Records on July 21, 2009. This album is the first album to feature lead vocalist Matty Mullins after former lead vocalist Chase Ryan left the band in 2008. Scheduled to be released summer 2008, the release got delayed because of the line-up change. Mullins has described the album as "a new breed of rock 'n' roll" and musically it has "more aggressive guitar work and noticeably more melodic, but still retains that southern swagger."
Document 13: One Ok Rock discography: Japanese rock band One Ok Rock has released eight studio albums, two EPs, 22 singles, seven video albums, six cover versions, and 32 music videos. One Ok Rock was formed in Tokyo, Japan in 2005, currently consists of Takahiro Moriuchi (vocals), Toru Yamashita (guitar/leader), Ryota Kohama (bass), and Tomoya Kanki (drums).
Document 14: Muzzle (band): 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.
Document 15: Hello Sleepwalkers: 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 ) .
ground_truth: alternative rock band