THE "TWO MİNUTES LEFT MY FRİEND" GETS ME EVERY. TİME. I usually adjust the volume higher than normal because I study in noisy environments and because of that I'm almost always startled... :D
Just keep in mind: this track is NOT intended to filter out background noise, just influence your brain. Suggestion: first set the volume level in a quiet room, then try that volume setting in the loud room and see how it works.
Zeynep Z