World exclusive on the Oscars

Oscar Stranoy is a contemporary Argentinian composer who studied with with Guillermo Scarabino, Guy Reibel, Michael Levinas, Gerard Grisey, Hans Zender, and John Carewe. He works in Europe and the US, and lives in Paris. Biography here, personal website via this link.
Oscar Straus (1870-1954) was a Viennese composer of operettas, film scores and songs. He also wrote about 500 cabaret songs, chamber music, and orchestral and choral works. He studied music in Berlin under Max Bruch, and became an orchestral conductor, working at the Überbrettl cabaret. In 1939, following the Nazi Anschluss, he fled to Paris and then to Hollywood, but returned to Europe after the war. His surname is spelt with a single 's'. An unconfirmed story says that he dropped the second 's' to distance himself from the Strauss musical dynasty. Biography via this link.
Oscar Herrero is a leading Spanish flamenco soloist, composer, and teacher . Personal website via this link.

Oscar Perez is a New York based jazz pianist and composer. He has a longstanding involvement with gospel music, and is music director of St Edward's Church in Harlem. Personal website via this link.
Oscar Hernandez is the New York based founder, music director and pianist for the "Spanish Harlem Orchestra" who received a Grammy Award nomination in 2002 for best salsa album. Biography via this link.
Oscar Macchioni is an Argentinian pianist who teaches at the University of Texas. His concert repertoire includes Antonio Soler, Heitor Villa-Lobos, Astor Piazzolla, Alberto Ginastera, Carlos Guastavino, and Castro. Personal websire via this link.

Oskar Kokoschka (yes I know, but the Oscars are noted for their self-indulgence) was the expressionist painter who provided a libretto for an opera by Ernst Krenek, whose story is told in Multicultural, multimedia and banned.
Please add missing Oscar, or Oskar, winners using the Comments facility below.
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Comments
And an anonymous reader has suggested Oscar Brand.
I wonder what I've started?
Hammerstein is the only person named Oscar ever to win an Oscar (Academy Award). He won two Oscars for best original song—in 1941 for "The Last Time I Saw Paris" in the film Lady Be Good, and in 1945 for "It Might As Well Be Spring" in State Fair.
Keep 'em coming in ...