Hypothetical 6502-based synthesizer calculator?

[Joseph_21sv]

Now that HP have been producing business calculators which are based on the MOS 6502 CPU or one of its variants, although neither is based on the exact 6510 variant which appeared in the Commodore 64 series beside the famous 658x/8580 SID, for over 10 years, that has made me think that there may be a new open space in the market for a handheld calculator with polyphonic audio synthesis. But of course, there will be little point to the feature unless the end-user actually has a documented way to program multiple voices. Imagine, if you will, HP producing a 17bii+, currently 8502 (double-speed-capable 6510) based with beeper speaker, which uses an upgraded SID chip to generate sound. It could be numbered, if you wouldn't mind the pun, 68B as 68 is the next multiple of 17 above 64, not to mention that it would only help such a programmable sound generator be useful if the user had at least 68K of memory to use for data storage.