Bach’s six Brandenburg Concertos were dedicated to the Margrave of Brandenburg, and bear a dedication date of 1721.
The instrumentation of the sixth concerto is most unusual, consisting only of violas, violas da gamba, ‘cellos, basses and continuo. This “lower string” instrumentation give the work a harmonious and mellow sonority. We are performing this work in “concerto grosso” style, with viola and ‘cello soloists.
The work is in three movements. The opening Allegro features the main theme in close canon, with the 2 viola parts entering right on the heels of each other, and the other instruments following suit, The following Adagio is a trio sonata in fugal form; the 2 viola soloists alternatively present the theme in various keys. The solo ‘cello and bass pick up the fugal theme towards the end of the movement. The last movement is a joyous ritornello. The string orchestra is juxtaposed against florid passages by the two solo violas and solo ‘cello, with the main theme returning four times.
Brandenburg Concerto No. 6, BWV 1051
By Johann Sebastian Bach
Composed in 1721