<prompt> Bhala ukuqhubeka kwalesi sigaba - uRostropovich wadlala eThe Proms ngobusuku bango-August 21, 1968. Wayedlala neSoviet State Symphony Orchestra kwakuwukuqala kwe-orchestra emdlalweni weProms. Lolu hlelo lwalune-Cello Concerto in B minor yomqambi waseCzech u-Antonín Dvořák futhi lwenzeka ngosuku olufanayo lapho iWarsaw Pact ihlasela iCzechoslovakia  <response>: ukuze kuqedwe iPrague Spring ka-Alexander Dubček. Ngemva komdlalo, owawandulelwe ukuphazamiseka nemiboniso, iqembu lomculo wezinsimbi nomculi bebodwa bashaywa ihlombe izilaleli zeProm. URostropovich wasukuma waphakamisa umculo kaDvořák owawuqoshiwe njengophawu lokubambisana nezwe lakubo lomqambi nedolobha lasePrague. 