The Washington Performing Arts Society doesn’t bring in much bold programming, but it does bring in top talent, so pianist András Schiff doing an all-Bach concert should be your tipoff that this is a WPAS show. As pedestrian programs go, you could do a lot worse than Bach’s “Well-Tempered Clavier,” as his 48 piano preludes and fugues are collectively called. The pleasing pieces are better known today for their use in piano instruction due to their spanning the full range of major and minor keys. Schiff will play selections from the second half, or book, of solo works, which are well suited to Schiff’s gentle touch. $21–$95.