Johann Sebastian Bach’s partitas are much grander and more technically challenging than his English Suites and French Suites, with larger individual movements.
The Partita No. 1 in B flat, published in 1726, is quite an upbeat affair, ranging in mood from cheerful and celebratory in the opening movements to ecstatic, almost manic, in its closing gigue. Even when the pace is slow, as in the sarabande, the tone remains distinctly bright and chipper.
A prelude is intended to introduce the listener to the key they will be hearing a lot of in the course of the work and Bach’s Praeludium does a bang-up job of this, feeling its way methodically through the various scale degrees of B flat until we think we know them as old friends.
Here is the amazing Grigory Sokolov to show you how rapidly this music moves forward: