text: A D-minor piece in this genre is nicknamed for its opening sequence of half notes: a descending "A, D," followed by a descending "E, A." Six pieces in this genre were collected into a prolific composer's Opus 20 and published with a drawing of the title Sun on the cover.
full_question: A D-minor piece in this genre is nicknamed for its opening sequence of half notes: a descending "A, D," followed by a descending "E, A." Six pieces in this genre were collected into a prolific composer's Opus 20 and published with a drawing of the title Sun on the cover. A second movement theme-and-variations on the melody of "Deutschland Ã¼ber alles" characterizes a piece in this genre part of a set nicknamed ErdÃ¶dy. During the Classical period, this musical form was modeled after the symphony's four-movement design. Joseph Haydn is called the father of the symphony and of this genre. For 10 points, name this genre of chamber music for two violins, one viola, and one cello.
first_sentence: A D-minor piece in this genre is nicknamed for its opening sequence of half notes: a descending "A, D," followed by a descending "E, A." Six pieces in this genre were collected into a prolific composer's Opus 20 and published with a drawing of the title Sun on the cover.
raw_answer: string quartet [prompt on "quartet"] 