Very relaxing, almost better than what you'd find on Spotify.
Edit: An issue I have is that they continually ask for you to give them a 5 star rating to keep using the skill free and even after leaving a 5 star rating the skill starts with the annoying message asking for a 5 star rating!
Get this Skill
By enabling, this skill can be accessed on all your available Alexa devices.
Free to Enable