Recorded on June 12-14, 1962 and September 4 and October 4, 1967 at Supraphon Domovina Studio in Prague. (Analog master) Features the high-fidelity SHM-SACD format (fully compatible with standard SACD player, but it does not play on standard CD players). *SHM-SACD (Super High Material SACD) is the ultimate Super Audio CD that utilizes the materials and technologies that were developed for the SHM-CD to further enhance the audio-resolution. Please note that SHM-SACDs are fully compatible with regular SACD players, but they do not play on standard CD players.