This will work for the first handful of times! But, like using your favorite song as an alarm for an early class or a stressful job, it creates a large problem for the user and their music taste:

The user's favorite piece of calming music will now be consistently connected as an alarm for the more stressful times of their profession/life.

Eventually, playing that music at any other point will induce some level of panic when they hear it because now they've trained their brain to associate it with this stress.