These applications provide the tools needed to program the synth which were missing when it was in production by Yamaha. The synth was discontinued after two years, probably in part due to its complexity (particularly the formant sequencing), poor front-panel controls, brief manual and limited polyphony.
The software solutions offered equipped the necessary tools for programming the synth that Yamaha lacked during production. As a result, the synth was terminated after two years, largely because of its complexity (especially in formant sequencing), poor user interface, concise documentation, and limited sound capacity.