A few weeks ago we heard the Concerto for two harpsichords, BWV 1061. Today, the ensemble Collegium 1704 performs an adaptation of this material in the format of a concerto for four solo instruments (oboe, viola da gamba, violin and bassoon), creating a texture similar to that of the six Brandenburgs. The arrangement is by Tim Willis.
The result is very satisfactory, allowing us to clearly tell apart the 4 lines that were originally assigned to the two harpsichords.