In the service of the Margrave of Baden-Durlach at Karlsruhe, Molter underwent various changes of employment with the political vicissitudes of the time and the deaths of patrons. He was Kapellmeister at the court of the Duke of Saxe-Eisenach but was finally able to return to Karlsruhe to re-establish the court Kapelle, which he directed from 1747 until his death.

Instrumental Music
Molter’s varied instrumental compositions include some 44 solo concertos in addition to 170 sinfonias. These sinfonias reflect his interest in and experience of music in Italy, where he had been sent for study and which he later revisited, spending time again in Venice and in Rome.