But these days, I most often do the repeat while I'm programming or writing; I want to keep in a particular zone-emotional and mental. Here are some tracks I've done this with (a good "music for programmers" list, actually).
Meeting in the Aisle - Radiohead
Sketches - Daniel Lanois
Jolie Cycliste Sous la Pluie - Galerie Stratique
In Threes - Loscil
Gelis - Natureboy Flako
Closed Circuit - Kaitlyn Aurelia Smith
Birds Fly by Flapping Their Wings - Biosphere
Unknown - Kutiman
Rainforest Suite - Robert Rich
Surface Currents - Kutiman
Structures from Silence - Steve Roach
Le Ballet des Mouches - Michel Moulinie **
No Partial - Rhythm & Sound
Mango Drive - Rhythm & Sound
Minus - Robert Hood
Echoes of Nothing I - Kyle Gann,, Aron Kallay from the Beyond 12 compilation
Night Vigil I - Michael Harrison
Sun Inside The Sun Loscil Remix - Souns, Loscil
Black Monk In The Dunes - X.Y.R.
** This (and the rest of the album Chrysalide) is a brilliant brilliant gem, and almost impossible to find, except here:
https://www.youtube.com/watch?v=HUWvXb6jVpw&list=PLh2Bth4KYI...