Within Me a Lunatic Sings

Continuing the music challenge:

Day 11: I Play This When I Need To: Concentrate

I have many answers that vary based on my mood, but I think Sigur Rós is a good choice in general. It's beautiful music from Iceland that is sung in Hopelandic — “a form of gibberish vocals that fits to the music.” Enjoy “Inní mér syngur vitleysingur:”