Question: What Austro-Hungarian composer helped produce "Princess Flavia" and "New Moon"?

Context paragraphs:
The Twilight Saga: New Moon: The Twilight Saga: New Moon, commonly referred to as New Moon, is a 2009 American romantic fantasy film based on Stephenie Meyer's 2006 novel "New Moon".  It is the second film in "The Twilight Saga" film series and is the sequel to 2008's "Twilight".  Summit Entertainment greenlit the sequel in late November 2008, following the early success of "Twilight".  Directed by Chris Weitz, the film stars Kristen Stewart, Robert Pattinson, and Taylor Lautner, reprising their roles as Bella Swan, Edward Cullen, and Jacob Black, respectively.  Melissa Rosenberg, who handed in a draft of the film script during the opening weekend of "Twilight", returned as screenwriter for "New Moon" as well.

The Twilight Saga: New Moon (soundtrack): The Twilight Saga: New Moon (Original Motion Picture Soundtrack) is the official soundtrack for the 2009 film "".  The score for "New Moon" was composed by Alexandre Desplat while the rest of the soundtrack was chosen by music supervisor Alexandra Patsavas, who also produced the "Twilight" soundtrack.  The "New Moon – Original Motion Picture Soundtrack" album was released on October 16, 2009 by Patsavas' Chop Shop label, in conjunction with Atlantic Records.

Amavasya: Amāvásyā (Sanskrit: अमावस्या ) means dark moon lunar phase in Sanskrit.  The word "Amāvásyā" is common to almost all Nepalese and Indian languages as most of them are derived from Sanskrit.  Ancient Babylonian, Greek and Indian calendars used 30 lunar phases, called tithi in India.  The dark moon tithi is when the Moon is within the 12 degrees of angular distance between the Sun and Moon before conjunction (syzygy).  The New Moon tithi (called Pratipada or Pratima) is the 12 angular degrees after syzygy.  Amāvásyā is often translated as new moon since there is no standard term for the Moon before conjunction in English.

Chaand Raat: Chaand Raat (Bengali: চাঁদ রাত, Urdu: ‎ , Hindi: चाँद रात; literally "Night of the moon") is a Bengali, Urdu and Hindi locution used in Bangladesh, Pakistan and India for the eve of the Muslim festival of Eid ul-Fitr; it can also mean a night with a full moon.  Chaand Raat is a time of celebration when families and friends gather in open areas at the end of the last day of Ramadan to spot the new moon, which signals the arrival of the Islamic month of Shawwal and the day of Eid.  Once the moon is sighted, people wish each other "Chaand Raat Mubarak" ("Have a blessed night of the new moon") or "Eid Mubarak" ("Blessings of the Eid day").  Women and girls decorate their hands with mehndi (henna), and people prepare desserts for the next day of Eid and do last rounds of shopping.  City streets have a festive look, and brightly decorated malls and markets remain open late into the night.  "Chaand Raat" is celebrated festively and passionately by Muslims (and occasionally non-Muslims as well) all over South Asia, and in socio-cultural significance, is comparable to Christmas Eve.

Princess Flavia: Princess Flavia is a 1925 operetta in three acts based on Anthony Hope's novel "The Prisoner of Zenda", with book and lyrics by Harry B. Smith and music by Sigmund Romberg.

Ecclesiastical new moon: An ecclesiastical new moon is the first day of a lunar month (an ecclesiastical moon) in an ecclesiastical lunar calendar.  Such months have a whole number of days, 29 or 30, whereas true synodic months can vary from about 29.27 to 29.83 days in length.  Medieval authors equated the ecclesiastical new moon with a new crescent moon, but it is not a phase of the true moon.  If the ecclesiastical lunar calendar is accurate, the ecclesiastical new moon can be any day from the day of the astronomical new moon or dark moon to two days later (see table).

Sigmund Romberg: Sigmund Romberg (July 29, 1887 – November 9, 1951) was an Austro-Hungarian composer who spent most of his adult life in the United States.  He is best known for his musicals and operettas, particularly "The Student Prince" (1924), "The Desert Song" (1926) and "The New Moon" (1928).

New Moon Rising (song): "New Moon Rising" is a song by Australian hard rock band Wolfmother.  It was released on their second studio album "Cosmic Egg", released in 2009.  The song shares its name with an Australian concert tour by the band, the New Moon Rising Tour, and was released as the lead single from the album on 25 August 2009.  According to the Australian Recording Industry Association, in 2009 in Australia, "New Moon Rising" was the 49th best-selling single by an Australian artist.

New Moon (film production): New Moon is an independently owned film production company based in Soho, London.  Founded in 1996 by Caroline Rowland, New Moon wrote and produced the films which helped to win the London bid for the 2012 Summer Olympics.  The company went on to work for 3 more successful bids when Sochi won the 2014 Winter Olympics, Qatar won the right to host the 2022 FIFA World Cup and on July 7, 2011 as PyeongChang won their bid to host the 2018 Winter Olympics.

New Moon (1930 film): New Moon is the name of two different film versions of the operetta "The New Moon" with music by Sigmund Romberg and book and lyrics by Oscar Hammerstein II and others.  The original stage version premiered on Broadway in 1928.  The 1930 version of "New Moon" is a 1930 black-and-white American musical film, and is also known as "Komissa Strogoff" in Greece, "Nymånen" in Denmark and "Passione cosacca" in Italy.

Supporting paragraphs: Princess Flavia Sigmund Romberg
Answer: Sigmund Romberg