Like many musicians of his era, practical demands and obligations were placed on J.S. Bach on a daily basis, and on a number of occasions this resulted in the German composer reworking existing compositions for use in new contexts. However, although listeners may have encountered pairs of ‘double’ works that use the same musical material (often an instrumental version and a vocal version), there are a number of cases where it seems reasonable to assume that one version of the work has not survived.
Works:
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Bach, J S: Concerto for 3 violins, strings & continuo in D major (reconstruction), BWV 1064R
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Bach, J S: Concerto in D minor for harpsichord, oboe, strings and continuo from BWV 35 & 1059
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Bach, J S: Concerto in D minor for organ, oboes, strings and continuo from BWV 1052, 146 & 188
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Bach, J S: Concerto in G for viola da braccio, strings and continuo from BWV 1055
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Bach, J S: Oboe d'amore Concerto in A major, BWV1055