I have done this with the twiddler3 paired with my phone in my pocket (you can also use it in recording mode, but I didn't). I don't do it a lot, but I enjoyed

I have done this with the twiddler3 paired with my phone in my pocket (you can also use it in recording mode, but I didn't). I don't do it a lot, but I enjoyed it for what I did with it. I'd quite like some sort of audio feedback while doing it, but I was accurate enough that it could still work as notes fairly well.