History of the Jews in Cologne in 1918, Adolf Kober took the place of rabbi of the Cologne community, which was one of the largest in Germany. Kober was one of the co-sponsors of the exhibition of the Jewish history in the "Millennium-Exhibition of the Rhineland", that took place at the Cologne trade fairgrounds in 1925. By 1918 the Jewish cemetery of Bocklemünd was opened, which is still in use today. With the takeover of the political power by the Nazis repression against the Jewish citizens of Cologne started again. In spring 1933, 15,000 inhabitants declared on the population census that they were Jewish. There were
Cologne leading galleries for postwar and contemporary art. Several orchestras are active in the city, among them the Gürzenich Orchestra, which is also the orchestra of the Cologne Opera and the WDR Symphony Orchestra Cologne ("German State Radio Orchestra"), both based at the Cologne Philharmonic Orchestra Building (Kölner Philharmonie). Other orchestras are the Musica Antiqua Köln and the WDR Rundfunkorchester Köln, and several choirs, including the WDR Rundfunkchor Köln. Cologne was also an important hotbed for electronic music in the 1950s (Studio für elektronische Musik, Karlheinz Stockhausen) and again from the 1990s onward. The public radio and TV station WDR was