To provide you with the most effective content, I need to know a bit more about your goals, as "Download relaxing music" can be approached in a few different ways. The query could mean a few different things:

It could be an educational post for a sharing tips on how to use downloaded music for stress relief.

Since promoting a is the most common intent for this type of content, I have provided a complete social media post focused on that below.

Did you want a post focused on this , or were you looking for copy to promote a specific app or website ?

Unplug completely from the internet and listen while walking in nature or traveling.

Avoid loud, jarring ads that break your peaceful state of mind.