how do I unsubscribe from amazon music?
Here's a help page - https://smile.amazon.com/gp/help/customer/display.html?nodeId=GCRZL3F2UZMNP3T3
go to your account page
find the section "memberships and subscriptions"
click music unlimited link
up at the top it shows you details about your subscription--what you have, when it renews, what card is on file to pay
you should see a "cancel subscription" link in that section.