Wikipedia:
Richard Tauber, born Richard Denemy (* May 16, 1891 in Linz; † January 8, 1948 in London), was an Austrian opera singer (tenor) and actor. He was given the name "King of Bel Canto" by the press and advertisers.
Richard Tauber was the illegitimate child of the soubrette Elisabeth Denemy (widowed after Karl Seyfferth) and the converted Jewish actor and Chemnitz opera director Richard Tauber. The birthplace was the Hotel Zum schwarzen Bären in Linz. The entry in the baptismal register was Richard Denemy. The legal status and the name were changed in 1913 as a result of the adoption by the father. Due to his mother's profession, Tauber grew up in Linz with foster parents and also attended elementary school there. Richard Tauber was Roman Catholic by birth (baptized in Linz), his mother was Roman Catholic and his father had converted to the Roman Catholic faith as a teenager. Tauber himself considered himself a Catholic and throughout his life did not understand that he was persecuted by the Nazis simply because his paternal grandparents were practicing Jews.
In 1903, at the age of twelve, Tauber moved in with his father in Wiesbaden, where he attended high school for the next five years. He then studied piano and composition at Hoch'schen Konservatorium in Frankfurt am Main from 1908 to 1910. Later he added conducting as a subject. Through the recommendation of his teachers, Tauber became a student of Carl Beines in Freiburg im Breisgau between 1911 and 1912, and trained in singing. There he was able to make his public debut on May 12, 1912 as a soloist of the "Concordia" singing society.
Almost a year later, on March 2, 1913, Tauber sang in an opera for the first time. He made his debut at the Chemnitz Theater as Tamino in Die Zauberflöte (Mozart). That year his father adopted him; officially he was now called "Denemy-Tauber," but he only called himself "Tauber." At the end of 1913, Tauber got an engagement at the opera in Dresden as a royal court opera singer; he did not finish this contract until 1918.
During this time, Tauber sang "Max" in Der Freischütz (Carl Maria von Weber), "Mathias" in Der Evangelimann (Wilhelm Kienzl), "Alfredo" in La traviata (Giuseppe Verdi) and many more. Between 1919 and 1920, Tauber moved from the Berlin State Opera to the Vienna Volksoper and back again. In 1921 he appeared for the first time in an operetta by Franz Lehár; he sang in Zigeunerliebe in Salzburg. These many guest appearances abroad led to a falling out in Dresden, so Tauber resigned there and went to Vienna.
Between 1922 and 1925, Tauber made a name for himself as a brilliant interpreter of Mozart operas, and his friend Franz Lehár wrote the tenor parts for him in many of his operettas. It was during this period that Tauber's regular engagements at the Salzburg Festival began. As early as 1922 he could be seen and heard as Don Ottavio in the first opera performance of the Salzburg Festival. In 1926 Tauber married the Hamburg soubrette Carlotta Vanconti, whom he had known for two years. After two years of marriage, the couple separated and divorced in 1928. This divorce made headlines when it became known that Vanconti had been compensated with one million marks; the daily press called Vanconti "outwardly a soubrette and inwardly a crocodile."
With the song "Dein ist mein ganzes Herz" from the operetta Das Land des Lächelns (Franz Lehár), Tauber became a world star virtually overnight. The astonishing thing is that he could hardly rehearse for it, as he spent weeks at a spa in Piešťany due to an attack of rheumatism.
Although financially stricken by the divorce, Tauber founded the Richard-Tauber-Tonfilm-Gesellschaft and went bankrupt with it in 1931. In 1930/31 Tauber got his first engagements in London and New York.

In 1933, Richard Tauber was attacked and beaten by an SA squad in front of the Hotel Adlon in Berlin with the words "Judenlümmel, raus aus Deutschland". Tau-ber actually wanted to emigrate immediately, but stayed to work on his operetta Der singende Traum. He dedicated the song "Du bist die Welt für mich" ("You are the world to me") from this piece to his tenor colleague and friend Joseph Schmidt. The following year he saw the premiere in Vienna.
At that time he was living with the singer Mary Losseff. His relationship with her began while he was still married to Carlotta Vanconti and ended tragically with the alcoholism of his lover.
In 1935, while filming Heart's Desire, Tauber made the acquaintance of the British actress Diana Napier and married her the following year. But this relationship did not last either; already during the war the couple went their separate ways. In 1938, after the annexation of Austria to the German Reich, Tauber undertook a world tour and emigrated to Great Britain.
Throughout the Second World War, Tauber remained in Great Britain and performed in many cities, among other places, to entertain troops. In 1940 he was granted British citizenship. He worked on several occasions as a conductor with the London Philharmonic Orchestra. In 1941 Tauber celebrated another premiere in London with his operetta Old Chelsea. The official critics gave him the name "The Man with the Monocle" because of his appearance.
In 1946 Tauber gave a farewell concert in Zurich (a recording of the radio broadcast has been preserved) and devoted the next two years almost exclusively to composing and conducting. During this time he was already living with Esther Moncrieff. On September 27, 1947, Tau-ber gave his farewell performance on the stage. He sang "Ottavio" in Don Giovan-ni (Mozart) in London with the ensemble of the Vienna State Opera conducted by Josef Krips. An already planned major tour of Australia in 1949 was undertaken by Rudolf Schock in his place.
At the end of 1947, Tauber underwent surgery at Guy's Hospital in London and died there a few weeks later at the age of 56 as a result of his lung cancer. Richard Tauber found his final resting place in an honorary grave of the City of London at Brompton Cemetery (Kensington West). A memorial stone was erected in the Bad Ischl cemetery.
Despite his fame and considerable income, Tauber left behind tax debts of around 750,000 marks. His widow Diana Napier was therefore unable to pay for the funeral; she received support from Vera Schwarz and Marlene Dietrich, among others. On January 20, 1948, a memorial service for Tauber was held at the Royal Albert Hall with over 7,000 participants: At this benefit concert in favor of Tauber's widow, Elisabeth Schwarzkopf performed, among others.