00:00 - Andante
02:41 - Adagio
06:27 - Presto
This is the Concerto in D minor by Johann Sebastian Bach, which in turn is an adaptation of Alessandro Marcello´s Concerto in D minor for oboe and orchestra.
Bach´s adaptation is for keyboard (harpsichord or cembalo) and my adaptation is for bandoneon, a musical instrument similar to an accordion or a concertina.