The viola quartet arrangements that I have made of Bach’s Prelude in E major and the Adagio and Fugue in C major are available for free download and use. If you perform them, please acknowledge me as the arranger!
Prelude from the Partita for solo violin in E major
The E major Prelude requires 4 strong players, as the tuning is difficult.
Adagio and Fugue from Sonata in C major for solo violina
The Adagio and Fugue are easier technically, with the exception of two passages of moderate difficulty for all four violas, and one passage for viola 1 which goes high and is tricky!