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 tools provided the necessary equipment for programming the synth that Yamaha lacked during production. This ultimately led to the synth being discontinued after two years, mainly because of its complexity (especially in formant sequencing), poor user interface, concise documentation, and limited sound capacity.