Sorry all for dropping the ball and losing it under a hedge regarding the next battle.
I have an idea. Let’s see what you think. Although I like the idea of a duel too 
Battle 64 - live looping
Rules:
- Use an external looping device or program of your choice.
- Set up some cool sounding instruments and effects on your OP-1
- Play the OP-1 live into the looper to produce your final track.
- You can prerecord things onto the OP-1 tape, but be creative! The idea is to improvise a bit.
- Use the element LFO with the microphone input, at least once.
- Maximum 6 minutes.
- For bonus points, make a video.
It’s a bit similar to Battle 55 - The Loop, but I think it gives you more potential (depending on your choice of looper) – looping on the OP-1 itself is pretty challenging.
Let me know if you have any comments, if not then i’ll set this officially as the battle, sometime before tomorrow.