premise: Your <mask> to write about Serge Prokofieff to honor his 70 th Anniversary for the April issue of Sovietskaya Muzyka is accepted with pleasure , because I admire the music of Prokofieff ; and with sober purpose , because the development of Prokofieff personifies , in many ways , the course of music in the Union of Soviet Socialist Republics .
hypothesis: the proper context for <mask> here should be a request (spoken or written) to participate or be present or take part in something