This week’s music is the Sonata in C Major for organ by J.S. Bach, performed by organist Ton Koopman on a Danish organ built in 1746.
We could not do a series on organ music without featuring Bach’s music. As kapelmeister (music director) for Prince Leopold of Anhalt-Kothen, Bach wrote weekly organ compositions and performed daily as the court organist. Most historians agree that Bach’s instrumental mastery of the organ was greater than any other instrument. Bach wrote so much organ music that one organist’s attempt to perform all of it took fourteen recitals over five years!
In the late 1720s, Bach wrote six sonatas for organ. (The “six sonatas” thing seems to have been a theme for Bach – he wrote six sonatas for organ, six sonatas for solo cello, and six sonatas for solo violin). The C Major sonata, which you will hear today, is built on a slow-paced theme from one of Bach’s earlier compositions. Bach added fast outer movements to the sonata, effectively sandwiching the recycled theme within two movements of complex and invigorating material.