| 41. | In arias, Bach often uses obbligato instruments, which correspond with the singer as an equal partner.
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| 42. | He accompanied her with flute obbligatos at fashionable social gatherings and at Queen's Hall, London.
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| 43. | He replaced the harpsichord solo by a lengthy " Cantabile " for violin and obbligato harpsichord:
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| 44. | His most notable works were the five " concertos symphoniques ", essentially symphonies with piano obbligato.
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| 45. | The second aria is accompanied by the full orchestra with the trumpet as a " ferociously demanding obbligato ".
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| 46. | The third movement is an alto aria with violin obbligato, which transcends " " ( towards Heaven ).
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| 47. | Obbligato recitative is used for moments of extreme drama, and here the orchestral accompaniment is elaborate and complex.
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| 48. | It is followed by a recitative for bass and an aria for alto, with obbligato violin and oboe.
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| 49. | The cantata in five movements is scored for two vocal soloists ( soprano and organ obbligato and basso continuo.
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| 50. | The variation for Ilka featured an obbligato solo for harp arranged by Drigo for the virtuoso harpist Albert Zabel.
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