There are not many options available of add-ons or extensions or WordPress plugins that you can use to sell Music securely with WooCommerce.
- Music player for WooCommerce by CodePeople: Free and Paid WordPress plugin
- Koplo WooCommerce Product Audio Sample Player (paid and not currently supported
Even without any add-ons, you can sell your music with WooCommerce by publishing it as a digital download product (Virtual Products).
After publishing the product as a digital download, store the music file securely on cloud storage service providers like Amazon S3, Google Cloud Storage, etc., and integrate with WooCommerce so that they are automatically published and delivered to customers.