I’ve been interested in drone-based music for a while and have written various pieces about it, including this overview that was originally published in a book edited by The Wire . Recently, Boing Boing asked me to write a guide to drone, so here it is. I’ve tried to cover recent mutations of drone such as the post-hiphop drone pop sound of Tri Angle Records, and the drone metal of Earth and Sun O))). Writing the piece also got me interested in drones in nature, cosmic drone vibrations such as the “sounds” that a black hole emits, and drone apps such as the marvelous SrutiBox and Droneo.