Amazon's music services include two music plans, one is Amazon Music Unlimited and the other is Amazon Prime Music.

Major Differences between Prime Music and Amazon Music Unlimited:

Prime Music

• Price: Free to Amazon Prime members
• Catalog: 2 million songs

Amazon Music Unlimited

• Price: $7.99/month to members; $9.99/month to non-members
• Catalog: "Tens of millions" of songs
• Others: Select artist music catalog available; ​more personalized curated playlists

Here are what Prime Music and Amazon Music Unlimited have in common:

• 30-day free trial
• Ad-free music streaming
• Offline playback
• Curated playlists
• Personalized stations
• Unlimited skips
• Support for Echo, Echo Dot, Amazon Tap
• Streaming through a web player or downloaded app