Question: It's Only Love, is a 1947 Austrian historical musical film, which portrays the life of which Austrian composer?

Context paragraphs:
The Paris Waltz: The Paris Waltz (French: La Valse de Paris) is a 1950 French-Italian historical musical film directed by Marcel Achard and starring Yvonne Printemps, Pierre Fresnay and Jacques Charon.  It portrays the life of the nineteenth century composer Jacques Offenbach.

Whom the Gods Love (1942 film): Whom the Gods Love (German:Wen die Götter lieben) is a 1942 Austrian historical musical film directed by Karl Hartl and starring Hans Holt, Irene von Meyendorff and Winnie Markus.  The film is a biopic of the Austrian composer Wolfgang Amadeus Mozart.  It was made as a co-production between the giant German studio UFA and Wien-Film which had been set up following the German annexation of Austria.  The film was part of a wider attempt by the Nazis to portray Mozart as an authentic German hero.  Like many German biopics of the war years, it portrays the composer as a pioneering visionary.

Franz Schubert: Franz Peter Schubert (] ; 31 January 179719 November 1828) was an Austrian composer.

It's Only Love (film): It's Only Love (German:Seine einzige Liebe) is a 1947 Austrian historical musical film directed by  Emmerich Hanus and starring  Franz Böheim, Klaramaria Skala and Walter Gynt.  The film portrays the life of the composer Franz Schubert.

The Spendthrift (1953 film): The Spendthrift (German: Der Verschwender) is a 1953 Austrian historical musical film directed by Leopold Hainisch and starring  Attila Hörbiger, Josef Meinrad and Maria Andergast.  It is an adaptation of  Ferdinand Raimund's play of the same name.

Crown Prince Rudolph's Last Love: Crown Prince Rudolph's Last Love (German: Kronprinz Rudolfs letzte Liebe/Mayerling) is a 1955 Austrian historical drama film directed by Rudolf Jugert and starring Rudolf Prack, Christiane Hörbiger and Winnie Markus.  The film portrays the tragic 1889 Mayerling Incident, in which Rudolf, Crown Prince of Austria and his lover Baroness Mary Vetsera committed suicide.

The Congress Dances (1955 film): The Congress Dances (German: Der Kongreß tanzt) is a 1955 Austrian historical musical film directed by Franz Antel and starring Johanna Matz, Rudolf Prack and Hannelore Bollmann.  It is a remake of the 1930 film "The Congress Dances", about a romance that takes place during the Congress of Vienna in 1814.

Klaramaria Skala: Klaramaria Skala was an Austrian stage and film actress.  She appeared in the 1947 historical musical film "It's Only Love"

The Mine Foreman (film): The Mine Foreman (German: Der Obersteiger) is a 1952 Austrian historical musical film directed by Franz Antel and starring Hans Holt, Josefin Kipper and Wolf Albach-Retty.  The film is an operetta film, which is based on the libretto of the 1894 operetta of the same title by Ludwig Held and Moritz West.  It is set in the reign of Ludwig I of Bavaria.  The film's sets were designed by Isabella and Werner Schlichting.

Pergolesi (film): Pergolesi is a 1932 Italian historical musical film directed by Guido Brignone and starring Elio Steiner, Dria Paola and Tina Lattanzi.  It portrays the brief life of the eighteenth century Italian composer Giovanni Battista Pergolesi.

Supporting paragraphs: It's Only Love (film) Franz Schubert
Answer: Franz Peter Schubert