Thank you. There are several self-recorded backing tracks involved. The drums plus bass are Yamaha MoXF preset, but self-made tracks are second piano, nylon guitar and the brass section, which sometimes picks up parts of the main melody line of the Invention and sometimes just throws in short chords fitting to the respective harmony.
I really think the figures of this Invention invited to turn it into a Salsa, it doesn't sound far-fetched to me (unlike the German pop ballad i turned into a Salsa some days ago).