I looked for a while to see who else listens to metal for programming! Glad to know I'm not the only one.
A second vote for black metal. Great for coding.
Could you provide some youtube link showing what you like to listen?
Windir is an example of a band I think works really well for coding:
https://www.youtube.com/watch?v=0v805xBELTs
https://www.youtube.com/watch?v=IW6h0lhXW3Q
Personally I'm partial to Norwegian Black metal for programming.