original: Later that year he left for the Hamburg Opera to work as a chorus director.
simplifications: He left later that year to be the Hamburg Opera chorus director. Later he became the chorus director for the Hamburg Opera. That year he left for Hamburg Opera, to direct the chorus . He went to the Hamburg Opera. He worked as a chorus director. Later that year, he went to the Hamburg Opera. He then worked as a chorus director. Later that year he left for the Hamburg Opera. He worked as a chorus director. He left for the Hamburg Opera to work as a chorus director. Later in the year he went to the Hamburg Opera as their chorus director. He left for the Hamburg Opera later that year to work as a chorus director. In that same year, he started working as a chorus director for the Hamburg Opera.