updated to included the reference frequency required for each tonic.
@bert , it might be nice if there was a shortcut for setting the base frequency to western scale tonics,
as memorising the tonic frequencies will not be much fun 
given as we have 8 buttons, perhaps one for each note C-B, then the 8th for ‘natural/sharp’
I know we shouldn’t limit ourselves to western scales, and microtonal is a fun area to explore (which im currently playing with 
) - but these scales/tonics are very common, so making it easier i think would be incredibly handy.
I guess for now, I’ll print off my little table…
and Im off to test this all on the SSP
edit:
ok, so ive done some testing, the ‘basis’ looks fine…
but I’ve found a couple of issues which ive reported to bert, along with the test cases
if your using midi, the incoming note to the MTQ appears to be incorrect, its needs to be raised by 9 semitones , alternatively i found you could apply a -0.236 offset on the MTQ input, which is ‘close enough’ (since we are quantising anway)
the other issue is its not scaling down from the ref frequency correctly.
this can be ‘compensated’ for, by using a lower ref frequency.
use the lowest frequency you need, e.g. rather than using A=440, you could use A=110hz , or even 55hz (halve frequencies to get lower octave)
generally, I find things can be a few cents out, and this inaccuracy increases the further you get away from the base frequency.
anyway… Ive reported these issues, and ive got a good way of testing these, so hopefully they can be resolved.
but as i said the good news, is the ‘basics’ of using the MTQ for ‘normal scales’ seems sound
