Rimsky-Korsakov, The Invisible City of Kitezh and other works (Vox Turnabout SQ LP, 1977), in a software-decode conversion. My source claims that sometime in 1977, Vox quietly switched from QS encoding to SQ without marking the change on its record jackets or labels. I'm not qualified to judge, but the decode--which may actually be from a Vox Box CD reissue--sounds convincing. I wasn't previously familiar with any of these pieces, which I like well enough.