Question: Who is a famous male singer with a voice equivalent to that of a soprano, mezzo-soprano, or contralto?

full_context: Document 1: Vincenzo Bellini: Vincenzo Salvatore Carmelo Francesco Bellini (] ; 3 November 1801 – 23 September 1835) was an Italian opera composer, who was known for his long-flowing melodic lines for which he was named "the Swan of Catania".
Document 2: Eunuch: The term eunuch ( ; ) generally refers to a man who has been castrated, typically early enough in his life for this change to have major hormonal consequences. In Latin, the words "eunuchus", "spado" (Greek: σπάδων "spadon"), and "castratus" were used to denote eunuchs.
Document 3: Countertenor: A countertenor (or contra tenor) is a type of classical male singing voice whose vocal range is equivalent to that of the female contralto or mezzo-soprano voice types, generally extending from around G to D or E, although a sopranist (a specific kind of countertenor) may match the soprano's range of around C to C. Countertenors often are baritones or tenors at core, but rarely use this vocal range in performance.
Document 4: Michael Maniaci: Michael Maniaci (born in 1976 May 3) is an American opera singer. Possessing a male soprano voice, Maniaci is noted for his claim to be able to sing into the upper soprano register without using falsetto, an otherwise common phonation for men who sing in high registers, such as countertenors. Although this was possible for castrati, because of the hormonal imbalance following castration, Maniaci claims that, for some unknown reason, his larynx did not develop and lengthen completely, causing his voice not to "break" in the usual manner. Maniaci claims that this physical particularity has given him the ability to sing in the soprano register without sounding like a typical countertenor or a female singer. There are, however, critics who claim that Maniaci actually sings in falsetto.
Document 5: Domenico Salvatori: Domenico Salvatori (27 September 1855 – 11 December 1909) along with Alessandro Moreschi, Domenico Mustafà and Giovanni Cesari, was one of the famous castrati singers of the late 19th century.
Document 6: Gaetano Donizetti: Domenico Gaetano Maria Donizetti (] ; 29 November 1797 – 8 April 1848) was an Italian composer. Along with Gioachino Rossini and Vincenzo Bellini, Donizetti was a leading composer of the "bel canto" opera style during the first half of the nineteenth century. Donizetti's close association with the bel canto style was undoubtedly an influence on other composers such as Giuseppe Verdi (1813–1901).
Document 7: Salvatore Fisichella: Salvatore Fisichella (born May 15, 1943 in Catania, Sicily) is an Italian operatic tenor known for his roles in bel canto operas, especially those of Rossini, Donizetti and Bellini. He has been recognized for the ease and vocal brilliance of his singing, and for having sung more of the leading roles in Bellini's operas than any other 20th century tenor.
Document 8: Francesco Dominici (operatic tenor): 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.
Document 9: Gaetano Fraschini: Gaetano Fraschini (16 February 1816 – 23 May 1887) was an Italian tenor. He created many roles in 19th century operas, including five composed by Giuseppe Verdi. His voice was "heroic ... with a baritonal quality, ... yet Verdi and Donizetti appreciated his ability to sing softly and with subtlety." An Italian biographer has pointed out Fraschini's role in extending the longevity of Donizetti's operas, while at the same time accelerating the ascent of Verdi's repertory. He was indeed the most prominent singer who facilitated the transition from Donizetti to Verdi. Fraschini sang over one hundred roles and Verdi placed him at the top of his favorite tenors' list and described him as a "natural Manrico" for his "Il trovatore". Fraschini also played a pivotal role in the success of many operas by Pacini and Mercadante.
Document 10: Domenico Allegri: Domenico Allegri (c. 1585 – 5 September 1629) was an Italian composer and singer of the early Baroque Roman School. He was the second son of the Milanese coachman Costantino Allegri, who lived in Rome with his family, and was a younger brother of the more famous Gregorio Allegri. Costantino sent three sons, Gregorio, Domenico and Bartolomeo, to study music at San Luigi dei Francesi, under the "maestro di capella" Giovanni Bernardino Nanino, brother of Giovanni Maria Nanino. The little boy had as schoolmate his elder brother Gregorio and then Antonio Cifra, Domenico Massenzio and Paolo Agostini.
Document 11: Sopranist: A sopranist (also, sopranista or male soprano) is a male singer who is able to sing in the vocal tessitura of a soprano usually through the use of falsetto vocal production. This voice type is a specific kind of countertenor. In rare cases an adult man may be able to sing in the soprano range using his normal or modal voice and not falsetto due to endocrinological reasons, like Radu Marian, or as a result of a larynx that has not completely developed as in the case of Michael Maniaci.
Document 12: Boy soprano: A boy soprano is a young male singer with an unchanged voice in the soprano range.
Document 13: The Three Tenors: The Three Tenors were a popular operatic singing group during the 1990s and early 2000s, consisting of Spaniards Plácido Domingo and José Carreras and the Italian Luciano Pavarotti. The trio began their collaboration with a performance at the ancient Baths of Caracalla in Rome, Italy on 7 July 1990, the eve of the 1990 FIFA World Cup Final. Zubin Mehta conducted the orchestra of Maggio Musicale Fiorentino and the orchestra of Teatro dell'Opera di Roma. The recording of this debut concert became the best-selling classical album of all time and led to additional performances and live albums. Around 1.3 billion viewers worldwide watched their second televised performance four years later at Dodger Stadium in Los Angeles. They last performed together at an arena in Columbus, Ohio on 28 September 2003.
Document 14: Castrato: A castrato (Italian, plural: "castrati") is a type of classical male singing voice equivalent to that of a soprano, mezzo-soprano, or contralto. The voice is produced by castration of the singer before puberty, or it occurs in one who, due to an endocrinological condition, never reaches sexual maturity.
Document 15: Tenor: Tenor is a type of classical male singing voice whose vocal range is between the countertenor and baritone voice types. The tenor's vocal range (in choral music) lies between C, the C one octave below middle C, and A, the A above middle C. In solo work, this range extends up to C, or "tenor high C". The low extreme for tenors is roughly A♭ (two A♭ s below middle C). At the highest extreme, some tenors can sing up to two Fs above middle C (F).
ground_truth: Domenico Salvatori