Journey to the Moon and Beyond finds even more new facets to Mort Garson's sound. There’s the soundtrack to the 1974 blaxploitation film Black Eye (starring Fred Williamson), some previously unreleased and newly unearthed music for advertising. Just as regal is “Zoos of the World,” where Garson soundtracks the wild, preening, slumbering animals from a 1970 National Geographic special of the same name. The mind reels at just what project would have yielded a scintillating title like “Western Dragon,” but these three selections were found on tapes in the archive with no further information.

The crown jewel of the set is no doubt Garson’s soundtrack to the live broadcast of the 1969 Apollo 11 moon landing, as first heard on CBS News. For decades, this audio was pre...