. . "1118404246"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "56945879"^^ . . . . . . . "History of home keyboards"@en . . . . . . . . . . "The history of home keyboards lies in mechanical musical instrument keyboards, electrified keyboards and 1960s and 1970s synthesizer technologies."@en . . . . "20113"^^ . "The history of home keyboards lies in mechanical musical instrument keyboards, electrified keyboards and 1960s and 1970s synthesizer technologies."@en . . . . . . .