请介绍一下低音提琴家 Rainer Zepperitz的概况？谢谢啊~

Rainer Zepperitz (born 25 August 1930, Bandung (Java)) is a German double bassist.

　　Background
　　In 1937 he returned to Germany with his family, moving in 1940 to Düsseldorf where he studied at the Robert Schumann Conservatory of Music. At age eighteen, he became a member of the Düsseldorf Symphony Orchestra. Between 1949 and 1951 Rainer Zepperitz was soloist of the Bonn State Orchestra. In 1951 he became the youngest member of the Berlin Philharmonic Orchestra and since 1957 he was double bass soloist of such orchestra. In 1954, he joined the chamber music ensemble of the Berlin Philharmonic, which later changed its name to Philharmonisches Oktett. At the end of the fifties, he was named professor of the Berlin Hochschule für Musik. In 1977 he founded the chamber music ensemble Philharmonische Virtuosen obtaining great international renown.

　　He was a member of the presidency of such orchestra for over a decade. He also was a founding member of the Orche