The sixth movement is a set of six variations on an andante theme in B flat major. The theme is presented primarily by the solo clarinet. The variations make use of various rhythmic motives and often feature solo instruments; for example, the first variation features the solo oboe. Unlike the other variations, all of which are in B flat major, the fourth variation is in B flat minor. The last two variations are in different tempos from the rest of the movement: the fifth is marked Adagio, while the sixth is marked Allegretto. The last variation is also in triple meter, in contrast with the other variations, which are in duple meter.