[1] The name "Casiotone" disappeared from Casio's keyboard catalog when more accurate synthesis technologies became prevalent, but the brand was reused for new models launched in 2019.
[citation needed] The later, more professional range of keyboards, the CZ series (1984–1986), used phase distortion synthesis, which is mathematically almost identical to Yamaha's frequency modulation synthesis, although implemented slightly differently in order to avoid patent infringement.
Some models sold from 1983 onwards included a cartridge bay to accept Casio ROM Packs which contained sheet music in a digital format.
The low cost and abundance of Casiotone keyboards made them fairly common fixtures in garage rock bands.
Musicians and bands known to use Casiotone keyboards include Alexis Taylor of Hot Chip, TG Miller of Black Camaro, Dan Deacon, Lettie, Maurizio Arcieri of Krisma, Kevin Parker of Tame Impala, Turnstyle, Trio, Ozma, Hedluv, and Chiara Lee of Father Murphy.