The Brandenburg Concerto No. 1, BWV 1046.2 is the only one in the collection with four movements. The concerto also exists in an alternative version, Sinfonia BWV 1046.1 (formerly BWV 1046a), which appears to have been composed during Bach's years at Weimar. The Sinfonia, which lacks the third movement entirely, and the Polacca (or Poloinesse, polonaise) from the final movement, appears to have been intended as the opening of the cantata Was mir behagt, ist nur die muntre Jagd, BWV 208. This implies a date of composition possibly as early as the 1713 premiere of the cantata, although it could have been used for a subsequent revival.
The first movement can also be found as the sinfonia of a later cantata Falsche Welt, dir trau ich nicht, BWV 52, but in a version without the piccolo violin that is closer to Sinfonia BWV 1046a. The third movement was used as the opening chorus of the cantata Vereinigte Zwietracht der wechselnden Saiten, BWV 207, where the horns are replaced by trumpets.

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