Bedtime seems like a great addition in theory, but the execution is a bit half-baked. A lot more steps than seems necessary, and there's no way to even preview the wake-up sounds.
hahaha you really weren't kidding. At first I thought it was some kind of 4chan troll, but...these look like legitimately confused people.
You can preview the sounds by clicking on them, they just start off very quiet and gradually get louder.