Question: What genre of music  did Loudest Whisper debut on a vinyl record format characterized by a speed of 33 ⁄ rpm, a 12 or 10 inch (30 or 25 cm) diameter, and use of the "microgroove" groove specification?

full_context: Document 1: Lir (band): LiR is an Irish rock band. Their sound has been described as "a fusion of funky progressive rock, folky mysticism and savvy pop". The band formed in the late 1980s in Dublin, firstly under the name The Spontaneous Frogs, then Uproar. They released their first EP, 'All Machines Hum in A', in 1992. In 1993, they released their first LP, 'Magico Magico!' under the label Velo Records (Velo was an Irish Indie) in Ireland. In 1994, they re-released 'Magico Magico!' to the US, under the independent record label What Are Records? (W.A.R.?). The new version of the album saw a revision to the track listing. LiR would release their second album, 'Nest', exclusively with W.A.R.?, the following year, in 1995. Around this time, they were notorious for playing constant live shows in Whelan's Bar, on Wexford Street in Dublin. The support act was regularly by another Dublin band called Dragonfly (the lead guitarist of Dragonfly later became LiR's second guitarist, after the departure of keyboardist David Hopkins). The LiR song 'Temple Child' appeared on the What Are Records? "Ammunition" compilation album, a music sampler of various independent artists. In 1997 the band appeared on the soundtrack for the movie "I Went Down", with the song 'There Are More Things'.
Document 2: Feadóga Stáin: Feadóga Stáin, Mary Bergin's debut album, has been credited with establishing the tin whistle as one of the first tier among the standard instruments of Irish Traditional Music. Members of Irish group De Dannan contributed accompaniment and the album is mostly a trio of tin whistle, Irish bouzouki and Bodhrán (Irish frame drum) . This album has been cited by Joanie Madden as highly influential in the development of her own playing, and is generally considered by critics and scholars as a "definitive" or milestone album.
Document 3: The Children of Lir (Loudest Whisper album): The Children of Lir is the debut album by Irish folk rock/progressive folk group Loudest Whisper. It is the studio adaption of the musical of the same name that was performed in Fermoy, Ireland in 1973. The album was released on LP record in Ireland by Polydor Records in 1974 in a limited edition of 500 copies.
Document 4: List of number-one EPs in the United Kingdom: In the 1950s and 1960s "a third vinyl format" was introduced alongside long-playing (LP) albums, and singles. The extended play (EP) used the same formats as singles but contained more tracks. Singles were the popular record format at the time – predominantly 10-inch 78 rpm and 7-inch 45 rpm formats – and the first singles chart was published by "New Musical Express" in 1952 with many other publications also producing singles charts in the 1950s and 1960s. "Record Mirror" published the first album chart in 1956 and, when "Record Retailer" began compiling an LP chart on 12 March 1960, they also compiled an EP chart. The EP chart consisted of a top ten and was expanded to fifteen positions the following week, and twenty the week after that. EPs "died out in the late 1960s" and "Record Retailer" reduced the chart to ten positions on 16 April 1966, publishing the final EP chart on 16 December 1967. For six weeks in 1966 and two weeks in December 1967, "Record Retailer" did not publish EP charts but they were compiled and "Record Mirror" published them; "Mirror" had begun publishing charts compiled by "Record Retailer" in March 1962, following a decision to stop compiling their own albums and singles charts.
Document 5: The Foggy Dew (album): The Foggy Dew is the debut album by Irish folk and rebel band The Wolfe Tones. The album is named after and features the song of the same name. Most of the songs on the album are old folk songs recorded by the band such as "The Sash", "Follow Me Up to Carlow " and "Roisin Dubh"; however, there are a number of original tracks.
Document 6: Out on a Limb Records: Out On A Limb Records is an independent record label, based in Limerick, Ireland. It is one of the longest running independent labels in Ireland. The label was set up in the summer of 2003 with the release of "Is it OK to be loud, Jesus?", the debut album from local band giveamanakick. It was set up by Albert Twomey (also see Plugd Records) and Richard Bourke, both of whom were involved in the Aspersion Music Collective, a non-profit gig promoter in Limerick. They were joined by Ciarán Ryan a couple of months after that, and the three have worked on the label ever since. In November 2009 it was announced that Twomey would no long be involved in the label. Ryan has admitted that himself and Bourke considered ending the label on a few occasions. In 2013 Winding's album 'I am not the Crow' was nominated for the Choice Music Prize, becoming the first band on the label to receive this nomination.
Document 7: Album: An album is a collection of audio recordings issued as a single item on CD, record, audio tape or another medium. Albums of recorded music were developed in the early 20th century, first as books of individual 78rpm records, then from 1948 as vinyl LP records played at 33 ⁄  rpm. Vinyl LPs are still issued, though in the 21st-century album sales have mostly focused on compact disc (CD) and MP3 formats. The audio cassette was a format used alongside vinyl from the 1970s into the first decade of the 2000s.
Document 8: Cardboard record: A cardboard record was a type of cheaply made phonograph record made of plastic-coated thin paperboard. These discs were usually small, had poor audio quality compared to vinyl or acetate discs, and were often only marginally playable due to their light weight, slick surface, and tendency to warp like a taco shell. Playability could be improved by placing a coin between the lock groove and the spindle hole to add weight and stability. These records are distinct from both flexi discs, which are sturdier, and from many of the old home-recording discs since cardboard discs were mass-produced for a specific purpose.
Document 9: Ceàrr: Ceàrr was the first album by the Celtic rock band Mill a h-Uile Rud. Ceàrr was the first CD of all-new Gaelic songs ever released and was also the first CD produced with exclusively Gaelic liner notes. Runrig's album Play Gaelic was the first album of all-Gaelic music in a modern, rock and roll style, but along with new compositions, featured rock re-workings of several traditional songs, and Oi Polloi's EP, Carson?, was the first vinyl album of all-new rock compositions in Gaelic. Ceàrr is also notable for its sexual themes and strong obscenity; a rarity in the ultra-conservative modern Gaelic music scene. The name of the album means "wrong" in Gaelic, and the band chose this name as a statement of their belief that you should use Gaelic, even if you don't feel entirely confident in the language.
Document 10: Vitaphone: Vitaphone was a sound film system used for feature films and nearly 1,000 short subjects made by Warner Bros. and its sister studio First National from 1926 to 1931. Vitaphone was the last major analog sound-on-disc system and the only one which was widely used and commercially successful. The soundtrack was not printed on the film itself, but issued separately on phonograph records. The discs, recorded at 33 ⁄  rpm (a speed first used for this system) and typically 16 in in diameter, would be played on a turntable physically coupled to the projector motor while the film was being projected, achieving a frequency response of 4300 Hz. Many early talkies, such as "The Jazz Singer" (1927), used the Vitaphone system. The name "Vitaphone" derived from the Latin and Greek words, respectively, for "living" and "sound".
Document 11: Album era: The Album era was a period in English-language popular music from the mid 1960s to the mid 2000s in which the album was the dominant form of recorded music expression and consumption. It was primarily driven by three successive music recording formats, the 33⁄  rpm phonograph (gramophone) record, the audiocassette and the music compact disc.
Document 12: Acetate disc: An acetate disc, is a type of phonograph (gramophone) record, a mechanical sound storage medium, widely used from the 1930s to the late 1950s for recording and broadcast purposes and still in limited use today.
Document 13: Whirring: "Whirring" is a song by the Welsh alternative rock band the Joy Formidable. Written by the band, it was originally released on the band's debut EP, "A Balloon Called Moaning", in 2009 before being re-released on the band's debut full-length album, "The Big Roar", in 2011.
Document 14: LP record: The LP (from "long playing" or "long play") is an analog sound storage medium, a vinyl record format characterized by a speed of 33 ⁄ rpm, a 12 or 10 inch (30 or 25 cm) diameter, and use of the "microgroove" groove specification. Introduced by Columbia in 1948, it was soon adopted as a new standard by the entire record industry. Apart from a few relatively minor refinements and the important later addition of stereophonic sound, it has remained the standard format for vinyl albums.
Document 15: Gramophone record: A gramophone record (phonograph record in the US), commonly known as a vinyl record or simply vinyl or record, is an analog sound storage medium in the form of a flat polyvinyl chloride (previously shellac) disc with an inscribed, modulated spiral groove. The groove usually starts near the periphery and ends near the center of the disc.
ground_truth: Irish folk rock/progressive