Rainbow keyboard players Tony Carey (1975-1977) and David Stone (1977-1979) used an Orchestron model B. The choir sound can be heard on the songs "Stargazer" from the album Rising, "Lady of the lake" and "Gates of Babylon" from the album Long Live Rock 'n' Roll.
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Swedish record producer and progressive rock musician Mattias Olsson has since the late 90s recorded several albums that features the Orchestron and Optigan prominently.