This is pretty rad, play the pipe organ – and with MIDI!

…Hauptwerk version 2, the pioneering virtual organ system that can bring the experience and sound of playing any pipe organ from anywhere in the world within the reach of almost anyone with a home computer and MIDI keyboard or MIDI sequencer, with incredible realism down to every last acoustic nuance and functional detail, whilst also powering the next generation of electronic digital organs and voice expanders for both classical organs and theatre organs.

Crumhorn Labs – [via] Link.