At Cöthen, Bach worked for Prince Leopold. The Prince was very musical and a wonderful man to work for. Bach was "Kapellmeister" (Director of Music) and was treated well. The organ was not very good, and it was not used much, so Bach did not write any organ music during this period. The Duke had an orchestra, and Bach was in charge. Nearly all Bach’s orchestral works were written in Cöthen: the Brandenburg Concertos, the violin concertos, the orchestral suites, the solo music for violin and for cello, and a lot of keyboard music for harpsichord or clavichord.