
At the top of his manuscript of six solo works for violin, Bach wrote ‘Sei solo’. But did he mean six solos (which is ‘Sei soli’ in correct Italian), or did he really mean ‘Sei solo’… you are on your own? In the days before spellchecks, spelling was more a question of feeling, especially in another language. It could be that Bach deliberately did not write ‘Sei soli’ above his six violin solos, choosing rather to warn his soloists before sending them off to perform with just a bow, four strings and a few of his most difficult pieces. Bach’s solo works are in line with the wonderful tradition of Westhoff, Biber, Matteis, Schop and others, although Bach aims not so much for virtuosity, but for interiority, playing a theoretical game with the impossibility of true polyphony on a single melody instrument. Bach understood perfectly well how our brain naturally makes music out of sounds. He was also aware of the importance of his work, calling the autograph manuscript of the sonatas and partitas from 1720 ‘Book 1’. He may have had the Cello Suites and the now solitary Flute Partita in mind as carefully planned sequels for the future. Polyphony on your own – you can hardly get your head around it.