Katja uploaded a performance at her channel, instantdecomposer's channel.

She creates some music, noises, and changes her voice...all in realtime (i.e. live sampling). Good job!

The quality of the image doesn't make her justice, but don't pay attention to that, just focus on her creative performance.

Haha very quirky. Man that sampled groove is amazing -- make sure to listen with headphones!

Any idea how see configured her patch to slice up those samples for her automatically?

She's probably using Slice Jockey: http://www.katjaas.nl/slicejockey/slicejockey.html

Well, I guess she's using her Slice//Jockey, http://www.katjaas.nl/slicejockey/slicejockey.html

Her site reads:
"Slice//Jockey is a crossover of music game and live performance tool".

She uploaded a video about it on Feb 3, 2011,

Oops, sorry, I didn't notice @ricky had already answered @rjp9 's question.

These videos are great. I'm definitely going to check out Slice Jockey.

I don't know if you have noticed but, at the very beginning of the video, there's a "collection of objects" which could properly be called a mess.

In fact, it looks like some kind of creative space. Whoever was holding the camera did a good job.