Bach wrote three sonatas for viola da gamba and harpsichord. Scholars estimate they were composed in the early 1740s, possibly for Carl Fredrich Abel, son of Bach's colleague Christian Ferdinand Abel. They are paired here with Scarlatti's Gamba Sonata and a Violin Sonata by Handel. These works are performed by violinist Robin Michael, cellist Steven Isserlis and harpsichordist Richard Egarr in a program of haunting tranquility.