Amazon Music — four tiers, one delivery
Amazon runs four music products: Amazon Music Unlimited (paid premium), Amazon Music Prime (free for Prime members), Amazon Music Free (ad-supported, no Prime needed), and the legacy Amazon MP3 store. SMSound India delivers your release to all four in a single upload.
Unlimited subscribers pay the highest per-stream royalty rate; Prime delivers higher volume at a slightly lower rate; and the ad-supported Free tier produces the biggest top-of-funnel discovery numbers in India. Your dashboard breaks earnings down by tier.