Nektar
Nektar, developer of the Panorama P1, P4 and P6, makes powerful MIDI USB controllers for all skill levels and styles. The P4 is a controller tightly integrated with Reason 5, 6 and 6.5. The most amazing USB keyboard controllers you have ever seen featuring deep integration with Cubase, Nuedo and Reason as well as the most advanced generic MIDI capabilities on the market.