The 1st work for soloists, mixed chorus and orchestra; the 2nd for contralto, mixed chorus and large orchestra.
Duration: 27:35 (1st work).
Program notes in English, German and French and texts in Czech, with English, German and French ([16] p. : ports.) inserted in container.
Recorded at the House of culture of the "Hlubina" mine, Ostrava, November 8-11, 1974.