Constantine the Great
Event 312Constantine the Great is said to have received his famous Vision of the Cross.
Source: Wikipedia — Constantine the GreatWhat happened on this day in history
Constantine the Great is said to have received his famous Vision of the Cross.
Source: Wikipedia — Constantine the GreatElection of pope Honorius I following the death of pope Boniface V two days prior.
Source: Wikipedia — Pope Honorius IFrench troops lay siege to Pavia.
Source: Wikipedia — Italian campaign of 1524–1525Condemned as a heretic, Michael Servetus is burned at the stake just outside Geneva.
Source: Wikipedia — Michael ServetusSecond Battle of Newbury in the English Civil War.
Source: Wikipedia — Second Battle of NewburyThe French garrison in Grave surrenders the town to a Dutch army after a difficult siege.
Source: Wikipedia — Grave, NetherlandsPhiladelphia is founded in the Commonwealth of Pennsylvania.
Source: Wikipedia — PhiladelphiaJ. S. Bach leads the first performance of Ich will den Kreuzstab gerne tragen, BWV 56, one of few works he called a cantata.
Source: Wikipedia — Johann Sebastian BachKing George III expands on his Proclamation of Rebellion in the Thirteen Colonies in his speech from the throne at the opening of Parliament.
Source: Wikipedia — George IIIThe United States and Spain sign the Treaty of Madrid, which establishes the boundaries between Spanish colonies and the U.S.
Source: Wikipedia — Pinckney's TreatyThe French Army under Napoleon enters Berlin following the Prussian defeat at the Battle of Jena–Auerstedt.
Source: Wikipedia — Fall of Berlin (1806)United States annexes the former Spanish colony of West Florida.
Source: Wikipedia — West FloridaMissouri governor Lilburn Boggs issues the Extermination Order, which orders all Mormons to leave the state or be killed.
Source: Wikipedia — Lilburn BoggsAmerican Civil War: Union forces led by General William F. Smith defeat Confederate forces in the Battle of Brown's Ferry, opening up a supply line to the besieged city of Chattanooga, Tennessee.
Source: Wikipedia — American Civil WarAmerican Civil War: Union General Benjamin Butler launches an attack during the Siege of Petersburg with the Battle of Fair Oaks & Darbytown Road, but is repulsed by the next day.
Source: Wikipedia — Benjamin ButlerFranco-Prussian War: Marshal Bazaine surrenders to Prussian forces at the conclusion of the Siege of Metz along with 140,000 French soldiers.
Source: Wikipedia — Franco-Prussian WarFifteen people are killed in Hungary when gendarmes opened fire on a crowd gathered at a church consecration.
Source: Wikipedia — Černová massacreA rail workers' strike in Chile escalates into a general strike, organized by the Regional Workers' Federation of Chile.
Source: Wikipedia — General strikeWorld War I: The new British battleship HMS Audacious is sunk by a minefield laid by the armed German merchant-cruiser Berlin.
Source: Wikipedia — World War INegus Mikael, marching on the Ethiopian capital in support of his son Emperor Iyasu V, is defeated by Fitawrari Habte Giyorgis, securing the throne for Empress Zewditu I.
Source: Wikipedia — Battle of SegaleThe Fourth Regional Congress of Peasants, Workers and Insurgents is held by the Makhnovshchina at Oleksandrivsk.
Source: Wikipedia — Regional Congress of Peasants, Workers and InsurgentsA referendum in Rhodesia rejects the country's annexation to the South African Union.
Source: Wikipedia — 1922 Southern Rhodesian government referendumThe Uzbek SSR is founded in the Soviet Union.
Source: Wikipedia — Uzbek Soviet Socialist RepublicRatifications are exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
Source: Wikipedia — London Naval TreatyAbdication Crisis: Mrs. Wallis Simpson obtains her divorce, which would eventually allow her to marry King Edward VIII of the United Kingdom, thus forcing his abdication from the throne.
Source: Wikipedia — Abdication of Edward VIIIWorld War II: German forces capture Banská Bystrica during Slovak National Uprising thus bringing it to an end.
Source: Wikipedia — World War IIA deadly smog event begins in Donora, Pennsylvania, eventually killing 20 and sickening thousands.
Source: Wikipedia — 1948 Donora smogBenjamin O. Davis, Jr. becomes the first African-American general in the United States Air Force.
Source: Wikipedia — Benjamin O. Davis Jr.Iskander Mirza, the first President of Pakistan, is deposed by General Ayub Khan, who had been appointed the enforcer of martial law by Mirza 20 days earlier.
Source: Wikipedia — Iskander MirzaNASA tests the first Saturn I rocket in Mission Saturn-Apollo 1.
Source: Wikipedia — Saturn I SA-1Major Rudolf Anderson of the United States Air Force becomes the only direct human casualty of the Cuban Missile Crisis when his U-2 reconnaissance airplane is shot down over Cuba by a Soviet-supplied surface-to-air missile.
Source: Wikipedia — Rudolf AndersonBy refusing to agree to the firing of a nuclear torpedo at a US warship, Vasily Arkhipov averts nuclear war.
Source: Wikipedia — Vasily ArkhipovRonald Reagan delivers a speech on behalf of the Republican candidate for president, Barry Goldwater. The speech launches his political career and comes to be known as "A Time for Choosing".
Source: Wikipedia — Ronald ReaganThe Democratic Republic of the Congo is renamed Zaire.
Source: Wikipedia — First Congolese RepublicSaint Vincent and the Grenadines gains its independence from the United Kingdom.
Source: Wikipedia — Saint Vincent and the GrenadinesThe Chun Doo-hwan government forcibly arrests and investigates monks and personnel of the Jogye Order.
Source: Wikipedia — Chun Doo-hwanCold War: The Soviet submarine S-363 runs aground on the east coast of Sweden.
Source: Wikipedia — Cold WarThe British government suddenly deregulates financial markets, leading to a total restructuring of the way in which they operate in the country, in an event now referred to as the Big Bang.
Source: Wikipedia — Big Bang (financial markets)Cold War: Ronald Reagan suspends construction of the new U.S. Embassy in Moscow due to Soviet listening devices in the building structure.
Source: Wikipedia — Embassy of the United States, MoscowTurkmenistan achieves independence from the Soviet Union.
Source: Wikipedia — TurkmenistanUnited States Navy radioman Allen R. Schindler, Jr. is murdered by shipmate Terry M. Helvey for being gay, precipitating debate about gays in the military that results in the United States' "Don't ask, don't tell" military policy.
Source: Wikipedia — Murder of Allen R. Schindler Jr.Widerøe Flight 744 crashes in Overhalla Municipality, Norway, killing six people.
Source: Wikipedia — Widerøe Flight 744Gliese 229B is the first Substellar Mass Object to be unquestionably identified.
Source: Wikipedia — Gliese 229The 1997 Asian financial crisis causes a crash in the Dow Jones Industrial Average.
Source: Wikipedia — 1997 Asian financial crisisGunmen open fire in the Armenian Parliament, killing the Prime Minister and seven others.
Source: Wikipedia — Armenian parliament shootingBritain withdraws from Afghanistan at the end of Operation Herrick, after 12 years four months and seven days.
Source: Wikipedia — Operation HerrickA gunman opens fire on a Pittsburgh synagogue killing eleven and injuring six, including four police officers.
Source: Wikipedia — Pittsburgh synagogue shootingLeicester City F.C. owner Vichai Srivaddhanaprabha dies in a helicopter crash along with four others after a Premier League match against West Ham United at the King Power Stadium in Leicester, England.
Source: Wikipedia — Leicester City F.C.Islamic State of Iraq and the Levant founder and leader Abu Bakr al-Baghdadi kills himself and three children by detonating a suicide vest during the U.S. military Barisha raid in northwestern Syria.
Source: Wikipedia — Islamic StateEmperor Ai of Tang, Chinese emperor (died 908)
Source: Wikipedia — Emperor Ai of TangRaymond VI, Count of Toulouse (died 1222)
Source: Wikipedia — Raymond VI of ToulouseTaejo of Joseon (died 1408)
Catherine of Valois, Queen consort of England (died 1437)
Source: Wikipedia — Catherine of ValoisMary Sidney, English writer, patroness and translator (died 1621)
Source: Wikipedia — Mary SidneyMarie Elisabeth of France, French princess (died 1578)
Source: Wikipedia — Marie Elisabeth of FranceChristian I, Duke of Saxe-Merseburg, (died 1691)
Source: Wikipedia — Christian I of Saxe-MerseburgFyodor Apraksin, Russian admiral (died 1728)
Source: Wikipedia — Fyodor ApraksinJohann Gottlieb Graun, German violinist and composer (died 1771)
Source: Wikipedia — Johann Gottlieb GraunMary Moser, English painter and academic (died 1819)
Source: Wikipedia — Mary MoserAugust Neidhardt von Gneisenau, Prussian field marshal (died 1831)
Source: Wikipedia — August Neidhardt von GneisenauNiccolò Paganini, Italian violinist and composer (died 1840)
Source: Wikipedia — Niccolò PaganiniJuan Seguín, American colonel, judge, and politician, 101st Mayor of San Antonio (died 1890)
Source: Wikipedia — Juan SeguínStevens T. Mason, American lawyer and politician, 1st Governor of Michigan (died 1843)
Source: Wikipedia — Stevens T. MasonIsaac Singer, American actor and businessman, founded the Singer Corporation (died 1875)
Source: Wikipedia — Isaac SingerDaniel H. Wells, American religious leader and politician, 3rd Mayor of Salt Lake City (died 1891)
Source: Wikipedia — Daniel H. WellsJohn Davis Long, American lawyer and politician, 34th United States Secretary of the Navy (died 1915)
Source: Wikipedia — John Davis LongGiovanni Giolitti, Italian politician, 13th Prime Minister of Italy (died 1928)
Source: Wikipedia — Giovanni GiolittiKlas Pontus Arnoldson, Swedish journalist and politician, Nobel Prize laureate (died 1916)
Source: Wikipedia — Klas Pontus ArnoldsonWilliam Alexander Smith, Scottish religious leader, founded the Boys' Brigade (died 1914)
Source: Wikipedia — William Alexander Smith (Boys' Brigade)Elliott Lewis, Australian politician, 19th Premier of Tasmania (died 1935)
Source: Wikipedia — Elliott Lewis (politician)Saitō Makoto, Japanese admiral and politician, 30th Prime Minister of Japan (died 1936)
Source: Wikipedia — Saitō MakotoTheodore Roosevelt, American colonel and politician, 26th President of the United States, Nobel Prize laureate (died 1919)
Source: Wikipedia — Theodore RooseveltCharles Spencelayh, English painter and academic (died 1958)
Source: Wikipedia — Charles SpencelayhWilliam Gillies, Australian politician, 21st Premier of Queensland (died 1928)
Source: Wikipedia — William Gillies (Australian politician)George Thompson, English cricketer and umpire (died 1943)
Source: Wikipedia — George Thompson (cricketer)Sigrid Hjertén, Swedish painter (died 1948)
Source: Wikipedia — Sigrid HjerténToshinari Shōji, Japanese general (died 1974)
Source: Wikipedia — Toshinari ShōjiOliver Leese, English-Welsh general (died 1978)
Source: Wikipedia — Oliver LeeseFritz Sauckel, German sailor and politician, convicted Nuremberg war criminal (died 1946)
Source: Wikipedia — Fritz SauckelYe Shengtao, Chinese writer, educator, and politician (died 1988)
Source: Wikipedia — Ye ShengtaoRiho Lahi, Estonian journalist and author (died 1995)
Source: Wikipedia — Riho LahiShahid Jatin Das, Indian freedom fighter (died 1929)
Source: Wikipedia — Jatindra Nath DasPeter Blume, Belarusian-American painter and sculptor (died 1992)
Source: Wikipedia — Peter BlumeEarle Cabell, American banker and politician, Mayor of Dallas (died 1975)
Source: Wikipedia — Earle CabellKazuo Ohno, Japanese dancer and educator (died 2010)
Source: Wikipedia — Kazuo OhnoJack Carson, Canadian-American actor and singer (died 1963)
Source: Wikipedia — Jack CarsonMargaret Hutchinson Rousseau, American chemical engineer (died 2000)
Source: Wikipedia — Margaret Hutchinson RousseauLeif Erickson, American actor (died 1986)
Source: Wikipedia — Leif Erickson (actor)Joe Medicine Crow, American anthropologist, historian, and author (died 2016)
Source: Wikipedia — Joe Medicine CrowLuigi Piotti, Italian race car driver (died 1971)
Source: Wikipedia — Luigi PiottiDylan Thomas, Welsh poet and playwright (died 1953)
Source: Wikipedia — Dylan ThomasHarry Saltzman, Canadian-French production manager and producer (died 1994)
Source: Wikipedia — Harry SaltzmanAugustine Harris, English bishop (died 2007)
Source: Wikipedia — Augustine HarrisOliver Tambo, South African lawyer and politician (died 1993)
Source: Wikipedia — Oliver TamboMihkel Mathiesen, Estonian engineer and politician (died 2003)
Source: Wikipedia — Mihkel MathiesenTeresa Wright, American actress and singer (died 2005)
Source: Wikipedia — Teresa WrightNanette Fabray, American actress, singer, and dancer (died 2018)
Source: Wikipedia — Nanette FabrayK. R. Narayanan, Indian lawyer and politician, 10th President of India (died 2005)
Source: Wikipedia — K. R. NarayananPoul Bundgaard, Danish actor and singer (died 1998)
Source: Wikipedia — Poul BundgaardMichel Galabru, French actor and playwright (died 2016)
Source: Wikipedia — Michel GalabruRalph Kiner, American baseball player and sportscaster (died 2014)
Source: Wikipedia — Ralph KinerRoy Lichtenstein, American painter and sculptor (died 1997)
Source: Wikipedia — Roy LichtensteinWarren Christopher, American soldier, lawyer, and politician, 63rd United States Secretary of State (died 2011)
Source: Wikipedia — Warren ChristopherJane Connell, American actress and singer (died 2013)
Source: Wikipedia — Jane ConnellPaul Fox, English broadcaster (died 2024)
Source: Wikipedia — Paul Fox (television executive)Monica Sims, English radio host and producer (died 2018)
Source: Wikipedia — Monica SimsHenri Fertet, French Resistance fighter (died 1943)
Source: Wikipedia — Henri FertetH. R. Haldeman, American businessman and diplomat, 4th White House Chief of Staff (died 1993)
Source: Wikipedia — H. R. HaldemanTakumi Shibano, Japanese author and translator (died 2010)
Source: Wikipedia — Takumi ShibanoDominick Argento, American composer and educator (died 2019)
Source: Wikipedia — Dominick ArgentoGilles Vigneault, Canadian singer-songwriter and poet
Source: Wikipedia — Gilles VigneaultBill George, American football player (died 1982)
Source: Wikipedia — Bill George (linebacker)Maurice Robert Johnston, English general and politician, Lord Lieutenant of Wiltshire
Source: Wikipedia — Maurice Johnston (British Army officer)Leo Baxendale, English cartoonist (died 2017)
Source: Wikipedia — Leo BaxendaleNawal El Saadawi, Egyptian physician, psychiatrist, and author (died 2021)
Source: Wikipedia — Nawal El SaadawiAnatoliy Zayaev, Ukrainian footballer and manager (died 2012)
Source: Wikipedia — Anatoliy ZayayevJean-Pierre Cassel, French actor (died 2007)
Source: Wikipedia — Jean-Pierre CasselHarry Gregg, Northern Irish footballer and manager (died 2020)
Source: Wikipedia — Harry GreggDolores Moore, American baseball player (died 2000)
Source: Wikipedia — Dolores MooreSylvia Plath, American poet, novelist, and short story writer (died 1963)
Source: Wikipedia — Sylvia PlathFloyd Cramer, American singer and pianist (died 1997)
Source: Wikipedia — Floyd CramerGiorgos Konstantinou, Greek actor, director, and screenwriter
Source: Wikipedia — Giorgos KonstantinouMaurício de Sousa, Brazilian journalist and cartoonist
Source: Wikipedia — Mauricio de SousaCharlie Tagawa, Japanese-American banjo player and educator (died 2017)
Source: Wikipedia — Charlie TagawaNeil Sheehan, American journalist and author (died 2021)
Source: Wikipedia — Neil SheehanLara Parker, American actress and author (died 2023)
Source: Wikipedia — Lara ParkerJohn Cleese, English actor, comedian, screenwriter and producer
Source: Wikipedia — John CleeseSuzy Covey, American scholar and academic (died 2007)
Source: Wikipedia — Suzy CoveyDallas Frazier, American country music singer-songwriter (died 2022)
Source: Wikipedia — Dallas FrazierArthur Blessitt, American Christian preacher (died 2025)
Source: Wikipedia — Arthur BlessittJulius Eastman, American composer (died 1990)
Source: Wikipedia — Julius EastmanMaxine Hong Kingston, American author and academic
Source: Wikipedia — Maxine Hong KingstonWarren Ryan, Australian rugby league player, coach, and sportscaster
Source: Wikipedia — Warren RyanDick Trickle, American race car driver (died 2013)
Source: Wikipedia — Dick TrickleJanusz Korwin-Mikke, Polish journalist and politician
Source: Wikipedia — Janusz Korwin-MikkeCarmen Argenziano, American actor and producer (died 2019)
Source: Wikipedia — Carmen ArgenzianoJerry Rook, American basketball player and coach (died 2019)
Source: Wikipedia — Jerry RookArild Andersen, Norwegian bassist and composer
Source: Wikipedia — Arild AndersenLuiz Inácio Lula da Silva, Brazilian union leader and politician, 35 and 39th President of Brazil
Source: Wikipedia — Luiz Inácio Lula da SilvaCarrie Snodgress, American actress (died 2004)
Source: Wikipedia — Carrie SnodgressPeter Martins, Danish dancer and choreographer
Source: Wikipedia — Peter MartinsSteven R. Nagel, American colonel, engineer, and astronaut (died 2014)
Source: Wikipedia — Steven R. NagelIvan Reitman, Slovak-Canadian actor, director, and producer (died 2022)
Source: Wikipedia — Ivan ReitmanTerry A. Anderson, American journalist (died 2024)
Source: Wikipedia — Terry A. AndersonKevin Borich, New Zealand-Australian guitarist and songwriter
Source: Wikipedia — Kevin BorichGarry Tallent, American bass player and record producer
Source: Wikipedia — Garry TallentMichael Driscoll, English economist and academic
Source: Wikipedia — Michael Driscoll (economist)Július Šupler, Slovak ice hockey player and coach
Source: Wikipedia — Július ŠuplerA. N. Wilson, English journalist, historian, and author
Source: Wikipedia — A. N. WilsonK. K. Downing, English guitarist and songwriter
Source: Wikipedia — K. K. DowningCarlos Frenk, Mexican-English physicist, cosmologist, and academic
Source: Wikipedia — Carlos FrenkJayne Kennedy, American model, actress, and sportscaster
Source: Wikipedia — Jayne KennedyRoberto Benigni, Italian actor, director, and screenwriter
Source: Wikipedia — Roberto BenigniFrancis Fukuyama, American political scientist, economist, and author
Source: Wikipedia — Francis FukuyamaTopi Sorsakoski, Finnish singer-songwriter (died 2011)
Source: Wikipedia — Topi SorsakoskiRobert Picardo, American actor, director, and screenwriter
Source: Wikipedia — Robert PicardoMike Kelley, American artist and musician (died 2012)
Source: Wikipedia — Mike Kelley (artist)Debra Bowen, American lawyer and politician, 31st Secretary of State of California
Source: Wikipedia — Debra BowenBabis Tsertos, Greek singer-songwriter and bouzouki player
Source: Wikipedia — Babis TsertosPeter Marc Jacobson, American actor, director, and producer
Source: Wikipedia — Peter Marc JacobsonDavid Hazeltine, American pianist and composer
Source: Wikipedia — David HazeltineJonathan Shapiro, South African political cartoonist who uses the pseudonym Zapiro
Source: Wikipedia — ZapiroFelix Wurman, American cellist and composer (died 2009)
Source: Wikipedia — Felix WurmanDonnell Thompson, American football player (died 2024)
Source: Wikipedia — Donnell ThompsonRick Carlisle, American basketball player and coach
Source: Wikipedia — Rick CarlisleTom Nieto, American baseball player, coach, and manager
Source: Wikipedia — Tom NietoDavid Hall, Australian horse trainer
Source: Wikipedia — David Hall (horse trainer)Mark Taylor, Australian cricketer and sportscaster
Source: Wikipedia — Mark Taylor (cricketer)Kit Malthouse, English accountant and politician
Source: Wikipedia — Kit MalthouseHege Nerland, Norwegian lawyer and politician (died 2007)
Source: Wikipedia — Hege NerlandDejan Raičković, Montenegrin footballer and manager
Source: Wikipedia — Dejan RaičkovićScott Weiland, American singer-songwriter (died 2015)
Source: Wikipedia — Scott WeilandAlain Auderset, Swiss author and illustrator
Source: Wikipedia — Alain AudersetVinny Samways, English footballer and manager
Source: Wikipedia — Vinny SamwaysMarek Napiórkowski, Polish jazz guitarist and composer
Source: Wikipedia — Marek NapiórkowskiJorge Soto, Peruvian footballer
Source: Wikipedia — Jorge Soto (footballer)Theodoros Zagorakis, Greek footballer and politician
Source: Wikipedia — Theodoros ZagorakisLee Clark, English footballer and manager
Source: Wikipedia — Lee Clark (footballer)Evan Coyne Maloney, American director, producer, and screenwriter
Source: Wikipedia — Evan Coyne MaloneyJason Johnson, American baseball player
Source: Wikipedia — Jason Johnson (baseball)Semmy Schilt, Dutch kick-boxer and mixed martial artist
Source: Wikipedia — Semmy SchiltPredrag Drobnjak, Montenegrin basketball player
Source: Wikipedia — Predrag DrobnjakNicola Mazzucato, Italian rugby player and coach
Source: Wikipedia — Nicola MazzucatoAron Ralston, American mountaineer and engineer
Source: Wikipedia — Aron RalstonManeet Chauhan, Indian-American chef and author
Source: Wikipedia — Maneet ChauhanWilson Júnior, Brazilian footballer
Source: Wikipedia — Wilson Júnior (footballer, born 1976)Sergei Samsonov, Russian ice hockey player and scout
Source: Wikipedia — Sergei SamsonovVanessa-Mae, Singaporean-English violinist and skier
Source: Wikipedia — Vanessa-MaeHiroyuki Yamamoto, Japanese footballer
Source: Wikipedia — Hiroyuki Yamamoto (footballer)Sayuri Osuga, Japanese speed skater and cyclist
Source: Wikipedia — Sayuri OsugaTanel Padar, Estonian singer-songwriter and guitarist
Source: Wikipedia — Tanel PadarHenriett Seth F., Hungarian autistic savant artist and author
Source: Wikipedia — Henriett Seth F.Salem Al Fakir, Swedish singer and keyboard player
Source: Wikipedia — Salem Al FakirSririta Jensen, Thai actress and model
Source: Wikipedia — Sririta Jensen NarongdejTakashi Tsukamoto, Japanese actor and singer
Source: Wikipedia — Takashi TsukamotoKelly Osbourne, English television personality
Source: Wikipedia — Kelly OsbourneAlex Soros, American investor and philanthropist
Source: Wikipedia — Alexander SorosChris Butler, American ice hockey player
Source: Wikipedia — Chris Butler (ice hockey)Christine Evangelista, American actress
Source: Wikipedia — Christine EvangelistaCrystal Langhorne, American basketball player
Source: Wikipedia — Crystal LanghorneMatty Pattison, South African-English footballer
Source: Wikipedia — Matty PattisonDavid Warner, Australian cricketer
Source: Wikipedia — David Warner (cricketer)Björn Barrefors, Swedish decathlete and heptathlete
Source: Wikipedia — Björn BarreforsGuillaume Franke, French-German rugby player
Source: Wikipedia — Guillaume FrankeAlex Bentley, American-Belarusian basketball player
Source: Wikipedia — Alex BentleyDimitrios Gkourtsas, Greek footballer
Source: Wikipedia — Dimitris GourtsasOktovianus Maniani, Indonesian footballer
Source: Wikipedia — Oktovianus ManianiStephan El Shaarawy, Italian footballer
Source: Wikipedia — Stephan El ShaarawyEmily Hagins, American director, producer, and screenwriter
Source: Wikipedia — Emily HaginsRasmus Ristolainen, Finnish ice hockey player
Source: Wikipedia — Rasmus RistolainenRasmus Andersson, Swedish ice hockey player
Source: Wikipedia — Rasmus AnderssonKim Woo-seok, South Korean singer and actor
Source: Wikipedia — Kim Woo-seok (singer)Haruka Kudo, Japanese singer and actress
Source: Wikipedia — Haruka Kudō (singer)