in the past, it was a lot of Trance and House...

more recently, it is lots of assorted Dubstep...

probably the most well known band in the genre is Skrillex...

but there are others (Knife Party, Zomboy, ...).

Philip Glass

For programming either Voivod (progressive trash whatever metal) or Soft Machine (fully instrumental jazz-rock). I listened to Master of Puppets while coding in Matlab though

I tend to listen to the kind of music I always listen too, its familiar and ignorable when I want it to be -- not in an unpleasant way -- just so that it can be background music. I find that listening to new music with very clear vocals is too distracting because I can't tune it out. Same for comedy, talk-radio, or news. I find that I don't actually need the music to concentrate, and in fact I barely notice consistent noise or silence of any type when I'm concentrating. Intermittent noises are more distracting, so I tend to use music either to cover them up, or to keep my subconscious energy levels up, especially when its late.

I listen to different things depending on my mood -- Metal and Industrial (Marilyn Manson, Orgy, NIN, Ramstein, KMFDM), 80s Dark Wave/Goth/New Wave (The Cure, Joy Division, Gary Numan -- Who I get to see next weekend!, The Birthday Massacre -- not really 80s, but sounds alike), and stuff that's kind of hard to categorize without overcategorizing (Abney Park, Stolen Babies, Dr. Steel).

For the heck of it, Here's one of my Spotify playlists.

some cool instrumental hip-hop or whatever you'd call it

No music at all. I don't need silence, but I can't think or concentrate with any sort of music playing.

Trance, Techno. I can tune them out because they are generally very noisy.

I can't listen to music however, when I read and comprehend.

I've been listening to this a lot lately.

Never band music, or pop music. That would destroy the situation completely. Only soundtrack music, particularly with some ambient qualities. Ideally no singing or lyrics.

Listening to music (particularly from other games) with the same emotional style and impact as you aim for in the game you are working on is the best way to go if you want your work to be creative and productive in all the right ways.

I tend to go through phases with my listening habits... for while I was listening to nothing but Frank Turner, then I switched (back) to drum and bass/dub step mixes, then it was across to metal/alternative bands, then Professor Green got me through a day or two and recently I'm on a Electro and Big Room House mix jaunt.

Lyrics tend not to bother me; I can code and sing along to them (either out loud at home or just simply mouthing the words at work)... depending on how things are going sometimes I'll even throw in a bit of air drums and/or keyboard for the heck of it (yes, at work).

The music itself isn't THAT important, I mostly use it to set my mood - if I'm sat in a chair, listening to D&B then my brain is conditioned to code... if I'm at the gym then it's conditioned to zone out and get back to me in an hour or 10km, whichever comes first