Willem Mengelberg & Eduard van Beinum have been chief conductors of this city's concertgebouw
... Van Beinum served as sole chief conductor of the orchestra after 
World War II... [DOC] [TLE] Willem Mengelberg - Wikipedia [PAR] Joseph Willem Mengelberg (28 March 1871  21 March 1951) was a Dutch 
conductor, famous ... Mengelberg also founded, in 1899, the annual 
Concertgebouw tradition of performing .... After his death, Philips issued 
recordings of live performances recorded by Dutch radio services, and these 
have been reissued by Decca.