Brandenburg Concerto No. 3 BWV 1048
The Third Brandenburg Concerto (see the above note for the origin of Bach’s six “Brandenburg” works) departs from the usual concerto grosso construct of a solo group set apart from the orchestra, and instead treats all members of the ensemble as independent solo voices: three violins, three violas and three cellos, supported by a continuo group of bass and harpsichord. The central theme of the opening movement revolves around a three-note figure that drops to the lower neighbor note and then returns to the starting pitch. This musical cell cascades through the string parts, highlighting the inherent equality among the voices in Bach’s scoring. The central Adagio movement consists simply of two linking chords, sometimes elaborated by an improvised cadenza, or even the insertion of another slow movement, an accepted practice in Bach’s time. The concerto closes with a barreling Allegro finale in 12/8 meter, its character not unlike the reeling gigues that conclude most of Bach’s dance suites.