Sleep Timer lets you fall asleep to your favorite music. You simply start your music, and then set the countdown timer. At the end of the countdown, Sleep Timer softly fades your music out and stops it. Allowing you to get your precious sleep and stops your battery from draining. Listen to music while falling asleep Use your favorite music player or even YouTube! Works with Google Play Music, TuneIn Radio, Spotify, YouTube and many many more. To verify whether it works with your favorite play