- Composer: Johann Sebastian Bach
- Work: Brandenburg Concerto No. 4 in G major
- Edition: 1850 - David, Ferdinand
- Part: Cembalo B - 3430
In contrast to the part marked continuo (piano A), this is a much fuller reduction of the main orchestral texture (also in David's own handwriting), that could perhaps have been use to accompany the soloists in rehearsal.