While writing Ra I listened to the following tracks pretty much incessantly. This list was originally twice as long but I've cut it down to about one track per artist, and also randomised it.
Here, or try the links below.
Some tracks may have been taken down from YouTube since I bookmarked them.
Cloudkicker, Danger, Godspeed You! Black Emperor, Kavinsky, M83, Madeon, Nero, Perturbator, Tesseract, The Glitch Mob, The Protomen