ZEDD is seen using the CME XKey 37 Mobile Keyboard Controller (bottom right of the photo) in this photo taken September 26th 2015 at the Southside Ballroom in Dallas Texas during his performance on his True Colors Tour. Photo credit [Rukes](http://photo.rukes.com/southside2/slides/southside2_022.html).more
I've had this for quite some time now and find it very useful indeed. I have a lot of keyboard apps triggered by Xkey. It's useful for scratching an itch just to do something quickly ! Also I find it useful if I'm picking up a new piece and haven't got the sheet for it. It's not a main piece of gear or anything but to be honest I wouldn't be without it now.