Wow, glad to hear I'm not the only one. People think I'm crazy and don't know how I can concentrate, but when I really need to focus and get some programming done quickly I throw on some speed metal and just cruise.

+1 on team aggressive music / calm concentration :-)

@pjgalbraith's suggestions were really great -- Venetian Snares all day!! -- here are few more. Join in and share :-)

Hard techno https://www.youtube.com/watch?v=9w0irSFx8-o

Baroque-inspired Breakcore. Fantastic https://www.youtube.com/watch?v=C5ATuxUnKqc (recommended: 5:01)

https://www.youtube.com/watch?v=R_V9f64KRYk

https://dyingfetus.bandcamp.com/album/wrong-one-to-fuck-with

U+1F918 :-)

Great to hear that I'm not the only one! Awesome suggestions. That Igorrr album is amazing.