In March 1954, Fritz Reiner made the first stereophonic recordings with the CSO, again in Orchestra Hall, for RCA Victor, including performances of two symphonic poems by Richard Strauss: "Ein Heldenleben" and "Also sprach Zarathustra". Reiner and the orchestra continued to record for RCA Victor through 1963. These were mostly recorded in RCA Victor's triple-channel "Living Stereo" process. RCA has digitally remastered the recordings and released them on CD and SACD. Jean Martinon also recorded with the CSO for RCA Victor during the 1960s, producing performances that have been reissued on CD.