If the future consists ofmassive computer networks,corrupt corporations /governments andaugmented humans, and isdirty and grim (i.e.Cyberpunk), you can bet that the music of choice will be techno, electronica, and/or industrial music. Ambient music of choice? Techno. Hanging out at theCoolest Club Ever? No hip-hop, punk rock, or any other dance music here, just techno.
Since techno, industrial music, and electronica require electronics (hence the name) to work, the use of such can bring a futuristic feel to it. The music is usually played to give a dystopian mood. Since cyberpunk is usually set inDystopia, and in a technological world, this kind of music is perfect for that setting.