However, this will be convenient for new users as they can easily use Spotify through their Google account without much hassle. If you’re an existing Spotify user, you will end up creating a new Spotify account if you use the ‘Continue with Google’ button.
In other words, you will have to use the email-based sign-in option if your Spotify email address is the same as your Google email address. In a support article, Spotify mentions that you can’t connect your existing Spotify account to Google.
The new Spotify-Google integration seems limited for now.
