Open the Amazon Alexa app on your smartphone or tablet.
Navigate to Settings:
Tap "More" (3 lines to the right of the light bulb at bottom)
Select "Settings".
Access Music & Podcasts:
Tap "Alexa Preferences,"
tap "Music & Podcasts".
Link a New Service:
Select "Link New Service".
Choose Spotify:
Tap on "Spotify".
Follow On-Screen Instructions: (Enable to use)
Authorize Alexa to access your Spotify account.