Johann Sebastian Bach’s harpsichord concertos, which are hugely popular today, once offered the composer a real field for experimentation. Bach often used pre-existing material. Thus, there is much to indicate that the E-major Concerto BWV 1053 is based on earlier concertante movements for a woodwind instrument (presumably oboe or oboe d’amore). In the revision, Bach naturally intervened deeply in the music and optimised the harpsichord solo part in particular with regard to the diverse expressi...