29,138 articles
Operation: Mindcrime
Operation: Mindcrime is Queensrÿche's 1988 EMI concept album about the assassin Nikki and Dr. X; a million-selling US breakthrough, widely called a defining progressive metal record, later followed by sequels II (2006) and III (2026).
Operetta
Operetta is a light musical theater that emerged in Paris and Vienna in the mid-nineteenth century. The French school was comic, while the Viennese school was sentimental and dance-oriented.
Opeth
Opeth, Swedish progressive metal/rock band from Stockholm formed in 1990, led by Mikael Åkerfeldt; known for Blackwater Park, Ghost Reveries, the 2011 clean-vocal turn on Heritage, and 2024's The Last Will and Testament.
Ophelia (album)
Ophelia is Natalie Merchant's second solo album (Elektra, May 19, 1998), a concept song cycle of six female characters, dedicated to Allen Ginsberg, peaking at number 8 on the Billboard 200 and certified platinum.
Opiate (EP)
Opiate is Tool's debut EP, released March 10, 1992 on Zoo Entertainment and Volcano Records: six songs, four studio and two live, produced with Sylvia Massy, reimagined as Opiate² for its 2022 30th anniversary.
Opium (record label)
Opium (00pium) is an Atlanta hip-hop label founded in 2019 by Playboi Carti, distributed by Interscope, with roster Ken Carson, Destroy Lonely, and Homixide Gang; known for dark distorted trap and all-black goth aesthetics.
OPM
OPM, or Original Pilipino Music, is the umbrella term for popular music written and performed by Filipinos in any language, coined by Danny Javier and first used on an album in 1978.
Oppikoppi
Oppikoppi is a long-running South African music festival held on a farm near Northam, Limpopo, first staged in 1994 and known as the country's biggest rock festival.
Optical
Optical is the alias of Matt Quinn, a London drum and bass producer and DJ who forms half of Ed Rush & Optical and co-founded Virus Recordings.
Opus
Opus is a creative work, generally a musical composition, used since Tinctoris (c. 1430–1511). Originally assigned by 17th-century publishers, the numbering often fails to reflect chronological order.
Opus Eponymous
Opus Eponymous is the 2010 debut studio album by Swedish band Ghost, released on Rise Above Records. Recorded in Linköping by Tobias Forge (as producer pseudonym Gene Walker), it pairs Satanic occult imagery with melodic 1970s-style heavy metal and became Rise Above's biggest seller.
Opus III
Opus III were a British rave and dance group whose 1992 single "It's a Fine Day", fronted by vocalist Kirsty Hawkshaw, reached number 5 in the UK.
Opus Kink
Opus Kink: Brighton, England jazz-punk six-piece formed 2017 (Angus Rogers, Sam and Fin Abbo, Jazz Pope, Jed Morgans, Jack Banjo Courtney). Debut album The Sweet Goodbye, 31 July 2026, SO Recordings; runs Hideous Mink Records.
Opus number
Opus number (Op., plural Opp.): Latin "work"; number identifying a composition or set, usually by publication order. Unreliable chronology; replaced by thematic catalogs like Köchel (Mozart), Hoboken (Haydn), BWV (Bach), Deutsch (Schubert), and WoO for unnumbered works.
Ora Cogan
Ora Cogan is a Canadian experimental folk singer-songwriter from Salt Spring Island, British Columbia, based on Vancouver Island. Albums include Crickets (2017), Formless (2023), and her Sacred Bones debut Hard Hearted Woman (2026); distinct from the French DJ Cogan.
Oracular Spectacular
Oracular Spectacular is the 2007 debut album by MGMT (Ben Goldwasser, Andrew VanWyngarden), produced by Dave Fridmann, released digitally October 2007 and physically January 22, 2008 on Columbia, with singles Time to Pretend, Electric Feel, and Kids, selling about two million copies.
Orange & Lemons
Orange & Lemons is a Filipino indie pop and alternative rock band formed in 1999 in Bulacan. They are known for hits like "Pinoy Ako."
Orange Caramel
Orange Caramel (오렌지캬라멜) is the first subunit of South Korean girl group After School, formed in 2010 by Pledis Entertainment with members Raina, Nana, and Lizzy.
Oranges & Lemons (album)
Oranges & Lemons is XTC's ninth album, a 15-track double album released 27 February 1989 on Virgin/Geffen, produced by Paul Fox, with the single The Mayor of Simpleton, following Skylarking.
Oranges and Lemons
Oranges and Lemons: English nursery rhyme and singing game about the bells of London churches, first printed 1744, ending in a chopper catch game; Roud #13190.
Orangestar
Orangestar (オレンジスター) is a Japanese Vocaloid music producer who debuted on NicoNico Douga in 2013 and is known for "Asu no Yozora Shōkaihan" and "DAYBREAK FRONTLINE."
Oratorio
An oratorio, or Oratorium, is a large-scale musical work for solo voices, chorus, and orchestra on a sacred story, performed in concert without staging; Handel's Messiah is the best-known example.
Orbit Culture
Orbit Culture is a Swedish melodic death metal band formed in Eksjö, Sweden, in 2013 by frontman Niklas Karlsson, known for albums like Nija and Death Above Life.
Orbital (band)
Orbital are a British electronic music duo formed in Sevenoaks, Kent, by brothers Phil and Paul Hartnoll, pioneers of live electronic performance who headlined Glastonbury in 1994.
Orchestra
Orchestra: large Western instrumental ensemble of strings, woodwinds, brass, and percussion; symphony and philharmonic orchestras exceed 100 players, standardized since the mid-18th century, conducted, fan-shaped seating.
Orchestra Super Mazembe
Orchestra Super Mazembe was a Congolese rumba band formed in Zaire in the late 1960s and based in Nairobi, whose 1977 hit "Kassongo" became a regional anthem.
Orchestral Manoeuvres in the Dark
Orchestral Manoeuvres in the Dark (OMD), English synthpop band formed 1978 on the Wirral by Andy McCluskey and Paul Humphreys; Kraftwerk-influenced, 14 albums from 1980 debut to Bauhaus Staircase (2023), hits Enola Gay and If You Leave.
Orchestre Kiam
Orchestre Kiam was a Congolese dance orchestra of the 1970s in Kinshasa, Zaire, named after its patron Verckys Kiamuangana and known for the 1976 hit "Kamiki".
Orden Ogan
Orden Ogan is a German power metal band from Arnsberg in North Rhine-Westphalia, led by Sebastian "Seeb" Levermann, with seven studio albums and two consecutive Top 3 German chart entries.
Ordinary (Alex Warren song)
"Ordinary" is a 2025 love ballad by American singer-songwriter Alex Warren, released February 7, 2025 as the lead single from his debut album You'll Be Alright, Kid.