Klaus Pringsheim Sr.

Klaus Pringsheim Sr. (24 July 1883 – 7 December 1972) was a German-born composer, conductor, music-educator and the twin brother of Katharina "Katia" Pringsheim, who married Thomas Mann in 1905.
Biography.
Pringsheim was the son of mathematician and artist Alfred Pringsheim and his wife Hedwig Dohm Pringsheim, who was an actress in Berlin before her marriage. His son, Klaus Pringsheim Jr., attended Bunce Court School, a German Jewish refugee school in Kent, England during World War II.
Along with making big effort for spreading and establishing classical music in Japan. He had a great influence on Japanese musicians. His famous students are Kōmei Abe, Kozaburo Hirai and Isotaro Sugata.