I sometimes get distracted by vocals, so I often find myself listening to Soma FM. Ambient type beats: http://somafm.com/ http://somafm.com/ You might check ou

I sometimes get distracted by vocals, so I often find myself listening to Soma FM. Ambient type beats: http://somafm.com/ http://somafm.com/ You might check out the Groove Salad, Space Station Soma, and Underground 80s stations. They also have an iPhone app.