| 11. | The inner movements are distinguished by their obbligato instruments.
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| 12. | This work is a four-voice short mass with two obbligato sopranos.
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| 13. | The aria is characterized by an obbligato bell duet.
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| 14. | His use of electronics, using digital delay on obbligato instruments with choir.
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| 15. | Two obbligato oboes take part in the setting.
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| 16. | A secco recitative leads to an alto aria with two obbligato oboi da caccia.
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| 17. | The second movement is a combined tenor aria and soprano chorale with obbligato strings.
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| 18. | Its first movement features a piano obbligato.
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| 19. | The singers are like an obbligato, an almost secondary decoration to the instrumental writing.
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| 20. | Joe Lovano's tenor sax played delicious and delicate obbligatos to Reeves'singing.
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