[Stk] Polyphony without using voicer

[David Johnson]

Just wondering how I'd go about this.
What I thought I'd be able to do was:

//----------------
// Declare another instrument using
Instrmnt *instrument2 = 0;
instrument2 = new BeeThree;

// Then sum the outputs

output->tick ( instrument->tick() + instrument2->tick() ) ;
//--------------

But it seems to crash every time.
Is this actually a feasible way to attempt it or is there something
glaring that will prevent this from working?

Thanks,

David