Here’s another demo video, via Andrew McPherson, of the TouchKeys keyboard system:
The TouchKeys make it natural and intuitive to play expressive techniques used on wind and brass instruments, including vibrato, pitch bends, scoops and falls. Here, the TouchKeys are used with virtual instruments from Sample Modeling (http://samplemodeling.com) to achieve realistic musical results. The TouchKeys feature mappings specifically designed for use with Sample Modeling instruments.
The TouchKeys system is available as a DIY add-on to existing keyboards or pre-installed on a MIDI controller. The system is being funded as a Kickstarter project, which has already reached its funding goal.