Agree. I have several Linux machines, one of which is dedicated to music production. I use (at the very least) Rosegarden, Renoise, Ardour, SooperLooper, Hydrogen, Rakkarack, a few soft synths, kmidimon, a real-time kernel and JACK. I have an M-Audio 24/96 card, and a Tascam US-122 for real world interfacing. I use an M-Audio short keyboard as a controller, a DX7s for a real keyboard feel, external reverb/echo, Kawai K4r, Roland D-110, Soundcraft mixer and a Sennheiser mike. I have a Yamaha FX-770 for a guitar interface and my whole workflow is controlled from Linux, sequenced by Linux and recorded in Linux. The only thing I would add is the use of an external MIDI clock with stop/start/resume and tempo; that, and I am currently experimenting with BLM controllers; I re-brained a Novation Launchpad and I now want MORE.