Suite no. 4 is one of the most technically demanding of Bach's suites, as E-flat is an uncomfortable key on the cello and requires many extended left hand positions. The Prelude primarily consists of a difficult flowing quaver movement that leaves room for a cadenza before returning to its original theme. The very peaceful Sarabande is quite obscure about the stressed second beat, which is the basic characteristic of the 3/4 dance, since, in this particular Sarabande, almost every first beat contains a chord, whereas the second beat most often doesn't.
