Eugen Jochum
Thom de Klerk (Thomas Johannes Josephus) (10 May 1912, The Hague, Netherlands – 13 October 1966, Abcoude). Dutch bassoonist, double reed maker, music teacher, conductor and music director. Thom de Klerk was the first solo bassoonist of the Royal Concertgebouw Orchestra from 1935 until 1966. He was successful with the directors Willem Mengelberg, Eduard van Beinum and Bernard Haitink. Guest directors like Eugen Jochum, Arturo Toscanini and Pierre Monteux made special requests for his presence in the orchestra.