I tend to hop over on soma.fm and pick a station. Usually "Sonic Universe" but I sometimes bounce around to the folk stuff, dubstep, celtic, etc.
Overall I like listening to either instrumental stuff or stuff I've never heard before, I feel like listening to songs with words that I know becomes a distraction somehow.
Interestingly, while driving and doing chores it's the exact opposite - I'm always relistening to songs I've heard a million times :)
I don't code, I do financial reporting, but I figured I'd answer anyway.
When I am doing tedious tasks that don't require much brainpower, I listen to hiphop/R&B (my favorite genre).
For actual hard analytical work, I listen almost exclusively to lo-fi hiphop. I need the drums for pacing and energy, but the instrumentals are very soothing and non-distracting. I'd seriously recommend trying lo-fi out if you like hiphop.
I listen to the same rap albums over and over again.
The up-tempo beats and lyrics keep me well paced throughout the day
The first part of my day is spent listening to either Kanye West's discography or Kid Cudi's discography (omitting some of his experimental stuff) then I might mix in other albums after lunch
I play sitar or flute music on youtube. I feel that it increases my concentration a lot and helps me focus as it doesn't has any lyrics and the music calms the mind.