Music for Concentration

Portals
1) Reddit - Music for Concentration
2) vip.aersia
3) The Sixtyone
4) Frisky

Single Links
1) Explosions in the Sky - The Earth Is Not a Cold Dead Place (2003)
2) Explosions in the Sky - First Breath After Coma
2) ODESZA - I Play You Listen 

White Noise:
1) simplynoise

Unknown:
1) http://urbandrop.ca/
2) http://www.lounge-radio.com/