Question: Are La rondine and Palestrina both operas?

Context articles: Pietro Spagnoli
Palestrina (opera)
Doretta's Dream
La rondine
Gustave Huberdeau
Giuseppe Adami
Ines Maria Ferraris
Disincanto
Francesco Dominici (operatic tenor)
Alyson Cambridge

Pietro Spagnoli (born 22 January 1964) is an Italian operatic baritone, born in Rome.
 In the 2013/14 season, he will be singing Sulpice Pingot in Donizetti's "La Fille du régiment" at The Royal Opera, having made his debut there as Figaro in "Il barbiere di Siviglia" and having since sung Rambaldo Fernandez in "La rondine".
Palestrina is an opera by the German composer Hans Pfitzner, first performed in 1917.
 The composer referred to it as a "Musikalische Legende" (musical legend), and wrote the libretto himself, based on a legend about the Renaissance musician Giovanni Pierluigi da Palestrina, who saves the art of contrapuntal music (polyphony) for the Church in the sixteenth century, through his composition of the "Missa Papae Marcelli".
 The wider context is that of the European Reformation and the role of music in relation to it.
 The character of Cardinal Borromeo is depicted, and a General Congress of the Council of Trent is the centrepiece of Act II.
"Doretta's Dream" is a 1987 single by Sarah Brightman.
 The song is based on the aria "Chi il bel sogno di Doretta" ("Doretta's Beautiful Dream") from Giacomo Puccini's opera "La Rondine".
 New English lyrics were written by Charles Hart.
La rondine ("The Swallow") is an opera in three acts by Giacomo Puccini to an Italian libretto by Giuseppe Adami, based on a libretto by Alfred Maria Willner and .
 It was first performed at the Grand Théâtre de Monte Carlo (or the Théâtre du Casino) in Monte Carlo on 27 March 1917.
Gustave Huberdeau (10 May 1874 – 31 May 1945) was a French operatic bass-baritone who had a prolific career in Europe and the United States during the first quarter of the twentieth century.
 He sang a wide repertoire encompassing material from French composers like Gounod and Massenet to the Italian grand operas of Verdi, the verismo operas of Mascagni, and the German operas of Richard Wagner and Richard Strauss.
 He sang in numerous premieres during his 30-year career, including the original production of Puccini's "La rondine" in 1917.
 Although possessing a rich and warm voice, Huberdeau had a talent for comedic portrayals which made him a favorite casting choice in secondary comedic roles as well as leading roles.
 After retiring from opera in 1927, Huberdeau remained active as a performer in stage plays and in French cinema throughout the 1930s.
Giuseppe Adami (4 February 187812 October 1946) was an Italian librettist, known for his collaboration with Giacomo Puccini on the operas "La rondine" (1917), "Il tabarro" (1918) and "Turandot" (1926).
Ines Maria Ferraris (also Ina Maria Ferraris) (6 May 1882 in Turin – 11 December 1971 in Milan) was an Italian operatic soprano and pianist who sang for more than two decades at La Scala in addition to appearances on the international stage.
 Although popular in Italy, she had a particularly devoted fanbase throughout South America.
 A light lyric soprano with a pure and agile voice, Ferraris sang a wide repertoire that encompassed the verismo operas of Puccini, the Italian grand opera of Verdi, and the German operas of Richard Strauss.
 She is particularly remembered for portraying the role of Lisette in the world première of Puccini's "La rondine" in 1917.
Disincanto is the twelfth studio album by Italian singer Mango.
 It features the singles "Disincanto" and "La rondine", and a cover of the Beatles' song "Michelle".
Francesco Dominici (1885–1968) was an Italian operatic tenor particularly admired for his acting in comedic roles.
 He made his professional opera debut as Fernando in Donizetti's "La favorite" at the Teatro Donizetti in Bergamo in 1914.
 He created the role of Prunier in the original 1917 production of Puccini's "La rondine" at the Grand Théâtre de Monte Carlo, a role which he performed at many other opera houses including the Teatro Comunale di Bologna.
 Over the next several years he played mostly leading roles at the Teatro Costanzi in Rome including Rodolfo in Puccini's "La Bohème", Fenton in Verdi's "Falstaff", and the Ernesto in Donizetti's "Don Pasquale".
 In the early 1920s he joined the roster at La Scala where he began playing more buffo roles than leading roles.
 In 1921, he sang the role of doctor Cajus in Verdi's Falstaff at La Scala and in 1922 was Filipeto in the company's first production of Ermanno Wolf-Ferrari's "I quattro rusteghi".
 In 1926 he created the role of Emperor Altoum in the original production of Puccini's "Turandot" at La Scala.
 In 1929 he went on tour with La Scala to Germany.
 Other roles that Dominici performed at La Scala include David in Wagner's "Die Meistersinger von Nürnberg", Monostatos in Mozart's "The Magic Flute", and the Neipperg in Umberto Giordano's "Madame Sans-Gêne".
 In 1931 he moved to Cuba, where he taught music for many years.
 Dominici died in Havana in 1968.
Alyson Cambridge is an American operatic soprano.
 A native of Washington D.C., she attended school in Cambridge and Oberlin College and studied at the Curtis Institute of Music.
 In 2003 she won the Metropolitan Opera National Council Auditions, which gained her entrance into the Metropolitan Opera's Lindemann Young Artist Development Program.
 In 2004 she made her Met debut as Frasquita in Georges Bizet's "Carmen".
 She has since appeared in several roles with that company, including Giannetta in "L'elisir d'amore", a Flower Maiden in "Parsifal", Karolka in "Jenůfa", Crobyle in "Thaïs", and Bianca in "La Rondine".