Home-recorded over the course of years in Berlin, Paris, and Brussels, World Brain’s latest album, “Open Source,” is engaging and dynamic. World Brain uses various software sounds, flutes, synths, as well as heavy vocal modulation to make a project that rides the line between nostalgic and futuristic. To listen through this album is to take a walk and risk the chance of your feet floating off the ground. Taking 90s futurism into today’s era, it makes muzak into something listenable, and dare I say delightful.