Thumbs up for happy hardcore and acid jazz. I love highly active, fast techno. Anything from the breakbeat, big beat, 2-step, hardcore, happy hardcore, gabba, drum & bass, and jungle subgenres. The problem with rap for me is that the lyrics distract my thinking while coding. Other types of electronic music don't keep me energized.

But when reading something more substantial than, say, looking something up in documentation, silence is excellent.