Sounds of Serenity is a flask web application in which users can mix various relaxing sounds and instrumental music together to create a relaxing environment. This can be used for anything such as studying, working, meditation, etc.

In the sounds panel, users can play multiple sounds, and adjust each of the sound's volume. Some sounds have multiple layers with adjustable volumes. For instance, the rain sound has three adjustable layers: "rain heavy", "rain light", and "rain tapping."

In the music panel, users can select from a variety of different instrumental music genres, and play at a volume of their choice. Also, users have the option to skip songs they do not like.