Question: What opera was written by the first composer of international stature to write Hollywood scores?

Context paragraphs:
Naresh Sohal: Naresh Sohal (born 1939) is an Indian-born composer of western classical music.  He is the first composer in this tradition ever to make settings of texts in Sanskrit, Punjabi and Bengali (although he has also made many settings in English).  He was the first composer ever to be offered an annual bursary by the Arts Council of Great Britain.  Sohal is the first Non Resident Indian (NRI) ever to be awarded a "Padma Shri" (Order of the Lotus) by the Indian Government.

Erich Wolfgang Korngold: Erich Wolfgang Korngold (May 29, 1897 – November 29, 1957) was an Austrian-born composer and conductor.  A child prodigy, he became one of the most important and influential composers in the history of Hollywood.  He was a noted pianist and composer of classical music, along with music for Hollywood films, and the first composer of international stature to write Hollywood scores.

Ben Oakland: Ben Oakland (September 24, 1907 - August 26, 1979) was an American composer, lyricist and pianist most active from the 1920s through the 1940s.  He composed mainly for Broadway and vaudeville, though he also worked on several Hollywood scores including for the film "My Little Chickadee".

Manuel Alonso Areizaga: Manuel Alonso de Areizaga (12 November 1895 – 11 October 1984) was a Spanish tennis player.  He was the first Spanish tennis player of international stature.

Music of the Marvel Cinematic Universe: The music of the Marvel Cinematic Universe (MCU) is the film and television scores composed by various composers for the films and television series of that franchise.  Ramin Djawadi provided the first MCU music with his original score for "Iron Man" in 2008.  Alan Silvestri was the first composer to work on multiple MCU films after he transitioned from scoring "" (2011) to "Marvel's The Avengers" (2012), while Brian Tyler was the first composer to reference the work of another MCU composer when he quoted Silvestri's "Captain America March" in his score for "" (2013).

Laurent-Benoît Dewez: Laurent-Benoît Dewez (14 April 1731 – 1 November 1812) was a Belgian architect of Walloon origin.  He is considered the most influential architect in the Austrian Netherlands (present-day Belgium) from the second half of the 18th century.  His architectural projects are of international stature and introduced a neoclassical style, with Italian and English influences, to the region.  He designed a large number of châteaux, abbeys and churches in Belgium, many of which were damaged after the French Revolution.

Violanta: Violanta is a one-act opera by Erich Wolfgang Korngold.  The libretto is by the Austrian playwright Hans Müller-Einigen.  It is Korngold's second opera, written when he was only seventeen years old.

Lois Betteridge: Lois Etherington Betteridge is a Canadian silversmith, goldsmith, designer and educator, and has been a major figure in the Canadian studio craft movement since its inception in the 1950s.  Betteridge was one of a small number of women active in the Canadian movement at a time when the field was dominated by male artists and designers, many of whom had immigrated to Canada from the United States, the United Kingdom, and Europe.  Betteridge is the first modern Canadian silversmith to attain international stature in the studio craft movement.

Alex North: Alex North (December 4, 1910 – September 8, 1991) was an American composer best known for his many film scores, including "A Streetcar Named Desire" (one of the first jazz-based film scores), "Viva Zapata! ", "Spartacus", "Cleopatra", and "Who's Afraid of Virginia Woolf? ".  He was the first composer to receive an Honorary Academy Award but never won a competitive Oscar despite fifteen nominations.

Symphony No. 8 (Sibelius): Jean Sibelius's Symphony No. 8 was his final major compositional project, occupying him intermittently from the mid-1920s until around 1938, though he never published it.  During this time Sibelius was at the peak of his fame, a national figure in his native Finland and a composer of international stature.  A fair copy of at least the first movement was made, but how much of the Eighth Symphony was completed is unknown.  Sibelius repeatedly refused to release it for performance, though he continued to assert that he was working on it even after he had, according to later reports from his family, burned the score and associated material, probably in 1945.

Supporting paragraphs: Violanta Erich Wolfgang Korngold
Answer: Violanta