Lowrey's first commercially successful full-sized electronic organ, the Model S Spinet or Berkshire, came to market in 1955, the year of his death. Lowrey (1871–1955), a Chicago-based industrialist and entrepreneur. The Lowrey organ is an electronic organ named after its developer, Frederick C. 1962) Lowrey Genie 44 electronic organ (1970s) Lowrey C500 Celebration electronic organ (1977) Lowrey Journey EY320 Virtual Orchestra (2010s) Electronic organ A Lowrey Royale SU500 / Palladium 630 organ (high end model) The Lowrey Holiday Deluxe Model LSL (1961) has a built-in Leslie speaker.