The PO is really fun! I've got the PO14, sub - it's a super bass, it also does does drums, fuzz guitar, and a whole lot of weird noises. I'm no musician, but I DO like making noise! I got a Synth Kit first, but as soon as the POs were available in the US, I grabbed one! From day one, I've wanted to combine the two.
Another member, @Outaspaceman did the hard part - and should get ALL the credit:
here ... er here
.. I mean here.
I modified his approach slightly, by keeping everything within the littleBits synthesizer. I took the output jack of the Pocket Operator to the input jack of a microphone bit, through a mix bit, which combined the littleBits' oscillator and filter with the PO. The timing of the littleBits microsequencer sets the rate of the PO-14, rather than the BPM setting.
Here is my "schematic":
And a demo, but be forewarned, there is no music here: