Hello,
Dunno about you but I have massive problems concentrating. To attempt to remedy this in 2011 I've just made myself a playlist of songs I like that help keep me focussed. Mostly wordlessness, electronica or post-rock. Giving it a first bash now. Be really curious what sort of music you work to.

My playlist is currently thus: http://open.spotify.com/user/seaninsound/playlist/1YC0a9aoJ159DlU9pWvJPo

Explosions In The Sky – Your Hand In Mine
Nine Inch Nails – LA Mer
Luke Abbott – Sirens For The Colour
M83 – Be Wild
Phoenix – Love Like A Sunset Part I
Worriedaboutsatan – Eyes Closed
Aphex Twin – Heliospan
Teengirl Fantasy – In The Rain
Health – Nice Girls - Blondes RMX
Justice – One Minute To Midnight
Ratatat – Swisha
Mum – Don't Be Afraid, You Have Just Got Your Eyes Closed
Actress – Hubble
Pantha Du Prince – The Splendour
Tortoise – C.T.A.
Oneohtrix Point Never – Stress Waves
Emeralds – Goes By
The Album Leaf – Twentytwofourteen
Four Tet – My Angel Rocks Back and Forth
Thom Yorke – Cymbal Rush (The Field Late Night Essen Und Trinken Remix)
Gang Gang Dance – Interlude (No Known Home)
Errors – A Lot Of The Things You Don't Isn't
Mogwai – Moses? I Amn’t
Richard Skelton – Threads Across The River
Max Richter – Infra 3
Efterklang – Foetus
M. Ward – Duet For Guitars #3
Hauschka – Wonder
Yann Tiersen – SUMMER 78 (instrumental)
Gonzales – Gogol - Instrumental
Andrew Bird – Nyatti
Ólafur Arnalds – 0952
Johann Johannsson – Fordlândia
Jeniferever – The Day The Violence Died
Electrelane – The Invisible Dog
Nina Simone – Summertime (Instrumental)
Brian Eno – 2/1