Question:  Green on Red and Hollywood Undead are both what?

full_context: Document 1: Bullet (Hollywood Undead song): "Bullet" is a song by American rap rock group Hollywood Undead, recorded as the eleventh track from their second studio album "American Tragedy" (2011). The song was produced by Griffin Boice. This song is the one of the few songs by Hollywood Undead to feature a member other than Danny or Deuce as the clean vocalist. Charlie Scene performs the chorus of "Bullet," in addition to "Rain" from Notes from the Underground. The song has received positive reviews from critics due to its cheerful tone and uptempo beat that directly contrast its dark lyrics about suicide and self-harm.
Document 2: Coming Back Down: "Coming Back Down" is a song by American rock band Hollywood Undead, the third single from their second full-length album, "American Tragedy", and the tenth track on that album. It is the band's ninth overall single in their discography. The track was released as a promotional single and free download on the band's official website on January 11, 2011. It was later released as a single on March 15, along with another single, "Been to Hell". A remix was featured on the band's "American Tragedy Redux" remix album.
Document 3: Undead (song): "Undead" is a song by American rap rock band Hollywood Undead, the first track and second single from their debut full-length album, "Swan Songs".
Document 4: The Three O'Clock: The Three O'Clock is an American alternative rock group associated with the Los Angeles 1980s Paisley Underground scene. Lead singer and bassist Michael Quercio is credited with coining the term "Paisley Underground" to describe a subset of the 1980s L.A. music scene which included bands such as Dream Syndicate, Rain Parade, Green on Red, and the Bangles.
Document 5: Hear Me Now (Hollywood Undead song): "Hear Me Now" is a song by American rock band Hollywood Undead, the first single from their second full-length album, "American Tragedy", and the sixth track on that album. It is the band's sixth overall single in their discography. It is also the first media released by the band without vocalist/producer Deuce. The track was released to radio on December 13, 2010, with a digital download following a week later on December 21. The official music video was released on February 25, 2011. A remix was featured on the band's "American Tragedy Redux" remix album.
Document 6: Hollywood Undead: Hollywood Undead is an American rap rock band from Los Angeles, California, formed in 2005. They released their debut album, "Swan Songs", on September 2, 2008, and their live CD/DVD "Desperate Measures", on November 10, 2009. Their second studio album, "American Tragedy", was released April 5, 2011. All of the band members use pseudonyms and wear their own unique mask, most of which are based on the common hockey goaltender design. The band members currently consist of Charlie Scene, Danny, Funny Man, J-Dog, and Johnny 3 Tears. Their third studio album, titled "Notes from the Underground", was released on January 8, 2013.
Document 7: Levitate (Hollywood Undead song): "Levitate (Digital Dog club mix)" is a song by American rock group Hollywood Undead and was released as the lead single from their first remix album, "American Tragedy Redux". It is the first song on the official track list and was added to rock radio formats on October 18, 2011. The song "Levitate" was originally featured on Hollywood Undead's latest studio album American Tragedy (album) but was not featured as a single. The remix of the song (the first version to actually be released as a single) was heavily promoted over the band's Facebook page, where its official video debuted. A rock version of "Levitate" was also released onto iTunes as a single on
Document 8: Swan Songs (Hollywood Undead album): Swan Songs is the debut album by Hollywood Undead, released through Octone Records and Polydor Records. The album was released on September 2, 2008. "Everywhere I Go" was the first single to be released, it was a web single and was available for download only on iTunes. The band released four music videos for four songs on the album, "No.5", "Undead", "Young", and "Everywhere I Go" When purchased through Amazon.com and at some other retailers, the album includes a bonus track and an option to unlock music videos. "Swan Songs" is the only studio album to feature vocalist Deuce, excluding the half-studio album "Desperate Measures".
Document 9: Mean Reds: Formed in 2003 in Tucson, Arizona, United States, The Mean Reds released one full-length LP, three EPs and a split album (with DVD) with notable Los Angeles, California rock band Wires On Fire. Featuring Anthony Anzalone, Wilson Snider, Nick Letson, Byron Hambacher, and Kyle Gutiérrez, the band relocated to Silver Lake, Los Angeles, California in 2004. Known for their raucous live performances and their affinity for Disney Channel's Hilary Duff, as well as actress Audrey Hepburn (whose film "Breakfast at Tiffany's" spawned the band's name - see The Mean Reds), the band embarked on several regional tours before breaking up on October 31, 2005.
Document 10: Osgoods: Osgoods are an American rock band with its roots in Tucson, Arizona. The band was formed by guitarist Anthony Nigro and drummer Colin Wyatt while they were both attending college in Tucson. In 1998, the band relocated to Los Angeles. In 2003 they released their first full album, "Automatic Do-Over", followed by "Smother and Shrink" in 2006.
Document 11: The Greenhornes: The Greenhornes are an American garage rock band from Cincinnati, Ohio, formed in 1996 by vocalist/guitarist Craig Fox, bass guitarist Jack Lawrence and drummer Patrick Keeler. They released their debut album "Gun For You" in 1999, followed by a self-titled album in 2001. A third studio album, "Dual Mono", was released in 2002, with the band taking a small hiatus. The Greenhornes returned in 2005 to release a new EP, "East Grand Blues", and a compilation album, "Sewed Soles". During this time, Lawrence and Keeler formed The Raconteurs with Detroit musicians and personal friends Jack White and Brendan Benson, leaving very few performances and interaction with Fox. In 2010, the band reunited once again to record a studio album, "Four Stars", their first in eight years.
Document 12: American Tragedy (album): American Tragedy is the second studio album by American rap rock band Hollywood Undead. Production for the album began following the induction of Daniel Murillo into the band in early 2010 and lasted until December. Don Gilmore and Ben Grosse, who helped produce the band's debut album, "Swan Songs" (2008), also returned to produce the album along with several other producers including Kevin Rudolf, Sam Hollander, Dave Katz, Griffin Boice, Jeff Halavacs, and Jacob Kasher. The album is musically heavier and features darker lyrical content than the band's previous effort. Originally set to release in March, "American Tragedy" was released on April 5, 2011 in the United States and was released on various other dates that month in other countries. A remix of the album, "American Tragedy Redux", was released on November 21, 2011.
Document 13: Green on Red: Green on Red was an American rock band, formed in the Tucson, Arizona punk scene, but based for most of its career in Los Angeles, California, where it was loosely associated with the Paisley Underground. Earlier records have the wide-screen psychedelic sound of first-wave desert rock, while later releases tended more towards traditional country rock.
Document 14: Paisley Underground: Paisley Underground is a subgenre of jangle pop that originated from California. It was particularly popular in Los Angeles, reaching a peak in the mid 1980s. Paisley Underground bands incorporated psychedelia, rich vocal harmonies and guitar interplay, owing a particular debt to 1960s groups such as Love and the Byrds, but more generally referencing a wide range of pop and garage rock revival.
Document 15: Greensky Bluegrass: Greensky Bluegrass is a five-piece American bluegrass/rock band founded in Kalamazoo, Michigan in 2000. The band has evolved over the years, growing from 3 to 5 members, adding electric effects and touring with a full light show. "The whole notion of “traditional bluegrass” strangely remains a sticking point for plenty of the genre's faithful. Partly because of their name, every article written about the band addresses the fact that what Greensky does is “not quite” bluegrass. These depths have been plumbed. In fact, in their own promotional material, GSBG describes their sound as “their own version of bluegrass music, mixing the acoustic stomp of a stringband with the rule-breaking spirit of rock & roll.” Greensky Bluegrass is known for their improvisation, multiple set shows, and open audience recording policy (akin to Phish and The Grateful Dead) and have broken through to a multi genre fanbase covering songs from Bruce Springsteen, Aerosmith, John Hartford, Dawes, Phish, The Grateful Dead, Rolling Stones, Prince and more.
ground_truth: rock band