Based on RB3KB-USB2MIDI but without the MIDI. Since the RB3 keyboard (especially the PS3 one) is a bit quirky and using Phase Shift with MIDI Link only allows you to play Keys, this program maps the controller to the default Phase Shift keyboard controls (1-5, tab, backspace, enter, delete) so you can also play Guitar/Bass.
I'm not very good at Phase Shift by the way; I've barely tested this.
Downloads and source code at: http://jasonharley2o.com/projects/rb3usb/keyboard/phaseshift/
Compile with Visual Studio 2015, and LibUsbDotNet - the package on NuGet will do.
Install the LibUSB filter driver on your keyboard, keep in mind this is per USB port. PS3: “vid: 12ba pid:2330” or Wii: “vid: 1bad pid:3330”.
Run RB3KB-USB2MIDI and click “Doing Nothing” to run. Play Phase Shift!