All kinds of music get me to concentrate. If I am particularly sluggish, I choose faster paced, more energetic music to get me going(genre is not a factor). With the music on and pluged in my ears, I grab my laptop and literally walk around the premises (to keep the momentum going) till the battery runs out. This puts me in trance-like state of mind where I am able to work through ridiculous amount of technical material that would be very dificult otherwise. I do not recommend this, though. Probability of tripping and falling is too high.
Currently, I have Amazonia by Gojira[0] on repeat. My mind knows all the ins and outs of this track so it's a really tasty audio glucose for my brain while it's doing heavy lifting.
[0] https://www.youtube.com/watch?v=B4CcX720DW4