Question: Who was the teacher of the composer of song Gretchen Am Spinnrade?

Knowledge 1: 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. [SEP] Knowledge 2: Gretchen am Spinnrade
(Gretchen at the Spinning Wheel), Op. 2, 118, is a Lied composed by Franz Schubert using the text from Part One, scene 18 of Johann Wolfgang von Goethe's "Faust".With "Gretchen am Spinnrade" and some 600 other songs for voice and piano, Schubert was a significant contributor to the genre of the Lied. "Gretchen am Spinnrade" was originally composed for the soprano voice, but it has also been transposed to accommodate mezzo-sopranos and other voice types.Schubert composed "Gretchen am Spinnrade" on 19 October 1814, three months before his eighteenth birthday .
Knowledge 1: 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. [SEP] Knowledge 2: Barbara Goleman
Barbara Ann Goleman is an American secondary- school teacher of English literature and winner of the 1969 National Teacher of the Year award.
Knowledge 1: Jean Mouton
Jean Mouton( c. 1459 – 30 October 1522) was a French composer of the Renaissance.He was famous both for his motets, which are among the most refined of the time, and for being the teacher of Adrian Willaert, one of the founders of the Venetian School. [SEP] Knowledge 2: 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.

Answer: Antonio Salieri