I can't listen to lyrics and program, the words draw my focus and make it difficult to proceed. I end up listening to Classical music or Psy/Trance for heavy coding days.
It may just be a psychological placebo but I seem to find my groove much easier when I'm uninterrupted and listening to music that blocks distractions.
I'm the exact same way. techno + baroque (Bach fugues especially) I at least feel more productive.
And given the number of other people who express similar tastes it makes me think there may be a market opportunity for a team of music theory nerds + neuroscientists + programmers to come up with a box that generates "music to think by".
(I want to believe that certain Bach fugues are wired into the universe at the level of apodeictic mathematical truth.)
It may just be a psychological placebo but I seem to find my groove much easier when I'm uninterrupted and listening to music that blocks distractions.