I used to work in an "off-licence" - and every Christmas they played Bing Crosby's
"White Christmas" 
Well - nice songs, but listen to the album for a week solid and it gets to you, you know?
On our airline, the crew are
instructed to play the corporate "hurry up and get off the aircraft" (specially commissioned) music for disembarking.
It speeds the turn-around process.
So - perhaps the music being "not objectionable" but "annoying to stay with" means that you have been victim to a clever crowd control specialist ....
