text: Genre and composer required. In a movement from one of these pieces, two recorders accompany asoprano soloist that represents the Roman deity Pales.
full_question: Genre and composer required. In a movement from one of these pieces, two recorders accompany asoprano soloist that represents the Roman deity Pales. The sinfonia that opens one of them is an F majorAdagio often transposed into G major and called the composer's "Arioso." Hymns by Philipp Nicolai wereincorporated into two of these pieces, such as in the tenor chorale "Zion hears the watchmen singing." Thesepieces include Herz und Mund und Tat und Leben and Wachet Auf, Ruft uns die Stimme, or Sleepers Awake, andinclude arias such as "Sheep May Safely Graze." One of them ends with the chorale "Jesu, Joy of Man'sDesiring." For 10 points, name these roughly two hundred choral pieces by the composer of The Well-TemperedKlavier. 
first_sentence: Genre and composer required. In a movement from one of these pieces, two recorders accompany asoprano soloist that represents the Roman deity Pales.
raw_answer: cantatas by J.S. Bach [or cantatas by Johann Sebastian Bach; prompt on Bach; prompt on J. Bach; prompt on Johann Bach; prompt on cantatas; do not accept "J.C. Bach" or "Johann Christian Bach"] 