https://finance.yahoo.com/news/spotify-shares-fall-report-amazon-152542614.html

In addition, the company sells Amazon Music Unlimited subscriptions for $9.99 a month, which is available for Prime members at a lower fee of $7.99 per month.

Spotify had 116 million ad-supported users and 96 million paying subscribers as of February 2019. Amazon has said "tens of millions" of paid customers listen to Prime Music and its standalone Amazon Music Unlimited service.