Question: Daniel Rodríguez (born May 24, 1964) is a Puerto Rican American operatic tenor from New York City, this led to an offer of formal training from José Plácido Domingo Embil, a Spanish tenor, conductor and arts administrator, commonly known as who?
Context: Plácido Domingo Ferrer (8 March 1907 – 22 November 1987) was a Spanish zarzuela baritone and father of popular operatic tenor Plácido Domingo.  Half Catalan and half Aragonese, he grew up and made his early career in Zaragoza, the capital of Aragon.  He frequently toured Spain with his soprano wife Pepita Embil.  In late 1948, they permanently moved to Mexico, where they successfully ran their own zarzuela company.  He also appeared in recordings and on Mexican television. Daniel Rodríguez (born May 24, 1964) is a Puerto Rican American operatic tenor from New York City.  He became known as "The Singing Policeman" in his former work with the New York City Police Department, due to his role as one of the department's designated National Anthem singers.  In the aftermath of the September 11 terrorist attacks, he received widespread attention with his rendition of "God Bless America", which he sang at memorial events and on television.  This led to an offer of formal training from Plácido Domingo.  Rodriguez has recorded numerous albums, and appeared as lead tenor in several operas.  He regularly appears in support of his chosen charities, as well as performing a full domestic and international concert schedule. Christmas in Vienna VI (also known as Christmastime in Vienna) is the seventh album in a series of Christmas concerts recorded in Vienna with Spanish tenor Plácido Domingo.  The concert that the recording comes from was the seventh Christmas in Vienna show that Domingo held since 1992, and the sixth concert recording to be released by Sony Classical.  (The Erato label released the fourth Christmas in Vienna concert from 1995 that Domingo held with José Carreras and Natalie Cole.)  Recorded in December 1998, it also includes the French singer Patricia Kaas and the Mexican singer Alejandro Fernández with the Vienna Symphony Orchestra directed by Steven Mercurio.  The album was released in September 1999. Antonio Vélez Alvarado a.k.a. "The Father of the Puerto Rican Flag" (June 12, 1864 – January 16, 1948) was a Puerto Rican journalist, politician and revolutionary who was an advocate of Puerto Rican independence.  A close friend of Cuban patriot José Martí, Vélez Alvarado joined the Puerto Rican Revolutionary Committee in New York City and is among those who allegedly designed the Flag of Puerto Rico.  Vélez Alvarado was one of the founding fathers of the Puerto Rican Nationalist Party. Spanish tenor Plácido Domingo has officially sung 147 roles in Italian, French, German, English, Spanish and Russian.  His main repertoire however is Italian ("Otello", Cavaradossi in "Tosca", "Don Carlo", Des Grieux in "Manon Lescaut", Dick Johnson in "La fanciulla del West", Radames in "Aida"), French ("Faust", "Werther", Don José in "Carmen", Samson in "Samson et Dalila"), and German ("Lohengrin", "Parsifal", and Siegmund in "Die Walküre").  Domingo currently continues to add more operas to his repertoire.  Since 2009, he has moved substantially into the baritone repertoire, especially focusing on Verdi baritone roles.  In 2015, he made his most recent debuts as Macbeth at the Berliner Staatsoper, Don Carlo in "Ernani" at the Metropolitan Opera, and Gianni Schicchi at the Los Angeles Opera.  Tim Page, a Pulitzer Prize-winner for music criticism, described Domingo in a 1996 "Washington Post" article as "the most versatile, intelligent and altogether accomplished operatic tenor now before the public." José Plácido Domingo Embil, {'1': ", '2': ", '3': ", '4': "} (] ; born 21 January 1941), known as Plácido Domingo, is a Spanish tenor, conductor and arts administrator.  He has recorded over a hundred complete operas and is well known for his versatility, regularly performing in Italian, French, German, Spanish, English and Russian in the most prestigious opera houses in the world.  Although primarily a "lirico-spinto" tenor for most of his career, especially popular for his Cavaradossi, Hoffmann, Don José, and Canio, he quickly moved into more dramatic roles, becoming the most acclaimed Otello of his generation.  In the early 2010s, he transitioned from the tenor repertory into almost exclusively baritone parts, most notably Simon Boccanegra.  He has performed 147 different roles. Joseph Kaiser is a Canadian operatic tenor.  In 2005, he won second prize in Plácido Domingo's Operalia International Opera Competition while competing as a baritone.  The judges were keen to his talents and potential as a tenor, and proposed that he make the switch to tenor.  He has performed as a soloist with the New York Metropolitan Opera, making his debut in October 2007 as Roméo in Charles Gounod's "Roméo et Juliette".  In November he returned to the Met sing the role of Tamino Mozart's "Die Zauberflöte". De Mi Alma Latina (also known as From My Latin Soul) is a 1994 Latin music album by Spanish tenor Plácido Domingo.  It was nominated for a Grammy Award for Best Latin Pop Album of the year.  Most of the tracks on the album are medleys of, in the words of one author, "some of the Latino world's most memorable melodies."  The only new composition on the album, "De México a Buenos Aires", was written by Domingo's son Plácido Domingo Jr. All the songs are in Spanish, except for "Manhã de Carnaval" and "Aquarela do Brasil", which are in Portuguese.  Domingo also used "De Mi Alma Latina" and "From My Latin Soul" as the names for some of his subsequent Latin music concerts.  In 1997, he released a follow-up album entitled "De Mi Alma Latina 2". Andrew McKinley (1903 – 11 January 1996) was an American operatic tenor, violinist, arts administrator, music educator, and school administrator.  Although he mainly performed in the United States, he had an active international singing career with major opera companies and symphony orchestras from the 1940s through the 1960s.  His repertoire spanned a wide range, from leading tenor parts to character roles. Josefa "Pepita" Embil Echániz (Basque: "Josefa Enbil Etxaniz"; February 28, 1918—August 28, 1994) was a Spanish Basque soprano who starred in zarzuela and operetta productions throughout Spain and Latin America.  Known as the "Queen of Zarzuela," she is especially remembered for her son, the internationally famous operatic tenor Plácido Domingo, whose early career she helped to nurture.  Embil began her professional career singing as a soloist in choirs, including the Basque national choir, Eresoinka, which based itself in France during the Spanish Civil War.  While still in her twenties, she appeared in the world premieres of several new zarzuelas.  She collaborated with some of the most prominent Spanish composers of the 1940s, including Federico Moreno Torroba, Jacinto Guerrero, and Pablo Sorozábal.  In late 1948, she moved to Mexico with her baritone husband, Plácido Domingo Ferrer.  In Mexico they ran a successful zarzuela company of their own, which toured throughout the Americas.  Over the course of her career, Embil made several recordings, primarily of zarzuela music.
Answer: Plácido Domingo