The Kawai & Teisco Analog Synths Group

according to manual
. In the poly 4 or mono mode, the sx210 memorizes the interval that it
is assigned.
.Using the lowest c-note as a reference, it is possible to store this
in memory by simple appointing the keys of the intervals that are to
be overlapped.
.Press Mono in the key assigner block. Depress the Chord  Memory
button , and play up to 7 notes. If you want less than 7 notes , it
will be necessary to cancel the function Chord memory, by depressing
tha button, otherwise the function will cancel on depression of the 7
th key. Each key played thereafter will yield a block chord following
the pattern set.
 one last paragraph I will type , if you want.

I program by ear and use the cord memory to further sounds in the key
hold, etc.