Franz Schubert
Franz Peter Schubert (31 January 179719 November 1828) was an Austrian composer of the late Classical and early Romantic eras.
Despite his short lifetime, Schubert left behind a vast oeuvre, including more than 600 secular vocal works (mainly lieder), seven complete symphonies, sacred music, operas, incidental music and a large body of piano and chamber music.
His major works include the Piano Quintet in A major, D. 667 ("Trout Quintet"), the Symphony No. 8 in B minor, D. 759 ("Unfinished Symphony"), the ”Great” Symphony No. 9 in C major, D. 944, the three last piano sonatas (D. 958–960), the opera "Fierrabras" (D. 796),
the incidental music to the play "Rosamunde" (D. 797), and the song cycles "Die schöne Müllerin" (D. 795) and "Winterreise" (D. 911).
Born in the Himmelpfortgrund suburb of Vienna, Schubert's uncommon gifts for music were evident from an early age.
His father gave him his first violin lessons and his older brother gave him piano lessons, but Schubert soon exceeded their abilities.
In 1808, at the age of eleven, he became a pupil at the Stadtkonvikt school, where he became acquainted with the orchestral music of Haydn, Mozart, and Beethoven.
He left the Stadtkonvikt at the end of 1813, and returned home to live with his father, where he began studying to become a schoolteacher; despite this, he continued his studies in composition with Antonio Salieri and still composed prolifically.
In 1821, Schubert was granted admission to the Gesellschaft der Musikfreunde as a performing member, which helped establish his name among the Viennese citizenry.
He gave a concert of his own works to critical acclaim in March 1828, the only time he did so in his career.
He died eight months later at the age of 31, the cause officially attributed to typhoid fever, but believed by some historians to be syphilis.
Appreciation of Schubert's music while he was alive was limited to a relatively small circle of admirers in Vienna, but interest in his work increased significantly in the decades following his death.
Felix Mendelssohn, Robert Schumann, Franz Liszt, Johannes Brahms and other 19th-century composers discovered and championed his works.
Today, Schubert is ranked among the greatest composers of Western classical music and his music continues to be popular.
Der Doppelgänger
"Der Doppelgänger" is one of the six songs from Franz Schubert's "Schwanengesang" that sets words by Heinrich Heine for piano and tenor voice.
It was written in 1828, the year of Schubert's death.
Alexandru Cristea
Alexandru Cristea( 1890 – 1942) was the composer of the music for" Limba Noastră", current national anthem of Moldova.
Walter Robinson (composer)
Walter Robinson is an African American composer of the late 20th century.
He is most notable for his 1977 song" Harriet Tubman", which has been recorded by folk musicians such as Holly Near, John McCutcheon, and others.
He is also the composer of several operas.
Alonso Mudarra
Alonso Mudarra( c. 1510 – April 1, 1580) was a Spanish composer of the Renaissance, and also played the vihuela, a guitar- shaped string instrument.
He was an innovative composer of instrumental music as well as songs, and was the composer of the earliest surviving music for the guitar.
Alexander Courage
Alexander Mair" Sandy" Courage Jr.( December 10, 1919
May 15, 2008) was an American orchestrator, arranger, and composer of music, primarily for television and film.
He is best known as the composer of the theme music for the original" Star Trek" series.
Karl Wilhelm (conductor)
Karl Wilhelm, also Carl Wilhelm( 5 September 1815, Schmalkalden – 26 August 1873, Schmalkalden) was a German choral director.
He is best known as the composer of the music of the song “ Die Wacht am Rhein. ”
Pydimarri Venkata Subba Rao
Pydimarri Venkata Subba Rao( June 10, 1916 – 1988) was a Telugu author who is best remembered as the composer of the National Pledge of India.
Michelangelo Faggioli
Michelangelo Faggioli( 1666–1733) was an Italian lawyer and celebrated amateur composer of humorous cantatas in Neapolitan dialect.
A founder of a new genre of Neapolitan comedy, he was the composer of the opera buffa" La Cilla" in 1706.
Petrus de Domarto
Petrus de Domarto( fl. c. 1445– 1455) was a Franco- Flemish composer of the Renaissance.
He was a contemporary and probable acquaintance of Ockeghem, and was the composer of at least one of the first unified mass cycles to be written in continental Europe.

Question: What nationality is the composer of song Der Doppelgänger?
Answer: Austrian