🇩🇪Johann Sebastian Bach ： Well-Tempered Clavier II no.20 a-moll BWV 889

No. 20 from Book II of The Well-Tempered Clavier is a paired set in which the prelude and fugue form a contrast. In the prelude, the voices are passed between one another within a continuous flow of sound, while harmonic changes and inner-voice movement drive the music forward. In the fugue, the subject is introduced in each voice, and the overlapping lines create a sense of tension. The prelude calls for an even treatment of its figurations while maintaining a broad sense of pulse; in the fugue, it is important to present the subject clearly while preserving the independence of each voice and the sonority of the whole. Pedaling should be used sparingly to avoid blurring the sound, with the aim of bringing out the dialogue between the voices.