Which two albums were advertised as having quadraphonic versions but were never released in that format?
Roxy & Elsewhere and One Size Fits All
Over-Nite Sensation and Apostrophe
Studio Tan and Sleep Dirt
Orchestral Favorites and Studio Tan
Answer
Roxy & Elsewhere and One Size Fits All were advertised as having quadraphonic versions, but these versions were never released. The four-channel master tapes for these albums may still exist in the Zappa archives.
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