This early CD compilation presents basic transfers of the MGM Records versions of the performances. It was part of a series of CD reissues by MCA Records who had obtained the rights to the MGM Records catalog. Because MCA also held the rights to the Decca Records catalog, they included some Decca singles in with the soundtrack performances. Judy's version of "The Trolley Song" here is the Decca version, not the soundtrack recording.
Images on the page from the collection of Scott Brogan.