One of the greatest composers of all time. Bach wrote hundreds of pieces for organ, choir, as well as many other instruments. He spent most of his life as a church organist and a choir director. His music combines profound expression with clever musico-mathematical feats, like fugues and canons in which the same melody is played against itself in various ways.
The complete second movement of the Reconstructed Concerto for violin, strings & continuo in D minor (reconstruction), BWV 1056