Just got a cat the other week, and I've been totally fascinated by the sound of purring. Seriously, it's amazing. Such an interesting sound from such a small animal. Anyhoo, I grabbed my phone the other night with the little fella was sitting on me and recorded it for a little. And then put the sample into Ableton late one night and started fiddling. Here it is, if you're interested..
Kittehmusik by kristofferpaulsen