So my mate had a great idea of how to bootleg some acapellas from this mix I Am Legion did for BBC. In some places they've got tracks like Angst, Vengeance Rhythm with Foreign Beggars acapellas over them. Theoretically it should be possible to take the track it's layered over, invert the polarity, and isolate the vocals right? Here's my attempt with the Neosignal - Angst / I Am Legion - Dust Descends mash up. First is the regular mix, the acapella attempt is at 0:11. Removes a ton of stuff, but there's still a lot of Angst in there. If any of you guys are wizards at this stuff I'd love to hear your attempts/advice.