In 1746 became organist of the Liebfrauenkirche at Halle. This was an important position and he was paid twice as much as he had earned at Dresden. He was expected to provide music for feast days, and so he began to compose cantatas which could be reused each year. He still visited his father, and often used parts of his music. After his father's death in 1750, Wilhelm Friedemann inherited as lot of his father's music, and tried to make people think they were his compositions. He was in trouble with the church when he went to Leipzig to sort out his father's estate. They felt that he was away for too long and was not fulfilling his proper duties.