todo
mute select — need to add to the voice mode button page.
toggle select — need to add to the voice mode button page.
sequence programming — 
knob mode select — toggles between a coarse and fine tempo adjustment value.
midi note number reset — hold down the knob mode select button until the LCD indicates that it’s done.
done
play/stop
pattern select
pattern copy
pattern chain / unchain
pattern clearing
voice select
fader mode select
voice mode select
sequence clearing — hold down the first step sequence button and the last step sequence button.