obbligato

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obbligato

(ŏbləgä`tō) [Ital.,=obligatory], in music, originally a term by which a composer indicated that a certain part was indispensable to the music. Obbligato was thus the direct opposite to ad libitum [Lat.,=at will], which indicated that the part so marked was unessential and might be omitted. Misunderstanding of the term obbligato, however, resulted in a reversal of its meaning; when a violin part, for example, is added to a song it is called a violin obbligato, whereas it may be a superfluous ornament for which ad libitum would be a more precise direction.

Obbligato

 

an instrumental part in a musical work that must not be omitted; it is obligatory that it be performed. Obbligato parts can be of varying importance—ranging from those that are significant but still form part of the accompaniment to parts that share equal significance with the featured solo part. In 17th- and 18th-century operas, oratorios, and cantatas (for example, in Bach’s Mass in B Minor) one often encounters arias, and sometimes even duets, with the participation of an obbligato instrument (or several instruments) and the orchestra. The opposite of obbligato is ad libitum (“at will”).

obbligato

, obligato Music
1. not to be omitted in performance
2. an essential part in a score
References in periodicals archive ?
Mai mult, pentru a publica ceva, suntem obligati sa ne specializam intr-o masura din ce in ce mai mare.
Instrumental obligati were splendidly taken by members of the efficient Birmingham Bach Orchestra, with the horns especially outstanding.
ch] concludes the 1st act we shall perform entire, as it will be an admirable example of the most striking defects & excellences of this oratorio--The subject is unpardonably light & trifling--The management of the concertante or {two words} obligati passages is excellent though they are unfit for sacred music.
Cu toate ca proprietarii erau obligati sa le dea in folosinta un lot de pamant pentru al munci multi tigani au refuzat, intrucat partea ce trebuia returnata stapanului il facea nerentabil.
Astfel, pe langa demonstrarea cautarii active a unui loc de munca si a disponibilitatii pentru angajare, somerii sunt obligati sa coopereze in stabilirea unui plan individual de actiune.
Molmenti cites the considerations with which the decree began: "Conviene nel proprio sostenimento de la publica grandezza prefiggere anco quegli ordini, che niente offuscando il lustro e il decoro ne le cerimonie de le Dogaresse sian per togliere l'obbligatione d'eccessivi dispendii, aggravanti in particolare l'Arti, e i popoli ad altri pesi obligati.