You have the choice of picking how you want to be soothed to sleep or stimulated to wake.

Alarm Music

Firstly, you can choose if you want to play the vigilance game or not. Secondly, you can choose any song in your iTunes library as your alarm clock. In this case, B.B. King's "Bring It Home To Me" was chosen.

Ambient Music

You can also choose any song or sound of your liking to fall asleep to. Listening to soothing music can help you to fall asleep. It can relax you after a long stressful day and it can put you in the right mind-set to go to bed. Such rituals can reduce how long it takes you to fall to sleep because your brain can associate certain music or particular sounds to falling asleep. For instance, crickets chirping or the wind howling. This is known as stimulus control therapy, or more broadly, classical conditioning, where a stimulus can act as a trigger to induce a behavior.