Thank you very much! The thing in the right corner is just a visualizer like the one that comes with many media players, but one that can be used on in coming audo (there's a link in the post if you want to check it out, it's called VSXu).

The question of how long it took to complete kind of depends on how you look at it. What you hear/see is done "live" in one take. However, I do set up the effects and stuff that I'm using beforehand, how long that takes depends on what I'm doing. This one probably took about an hour of set up time, which consisted mostly of patching up my modular stuff, loading up plug-ins, dialing in effects settings, and setting up looping sequencer parts for some of the synths I used. Occasionally I'll play some synth parts live, but not often (and not in this one). Most of the "performance" in these is usually more knob tweaking than instrument playing... controlling the levels of different parts, tweaking sounds, and keeping multiple feedback loops from getting too wild. Most of that is on the hardware side, which you can't see in the videos. That might change eventually, but I don't have the gear or setup to do that now.