[Samathy]

How does playing a single song on a loop keep you focused on working and being productive. Doesn't the repetitiveness distract/annoy you?

[fedesilva]

In my case its the contrary; it's the changes in patterns that distract me; the brain can move repetitive sounds to the background.

I don't play the same song but play repetitive music, also I use mid-tempo and up so I don't get sleepy.