To embed Spotify in Squarespace, you can follow these steps.
#1. First, in Spotify, click on the 3 dots icon (****… ) on the Spotify playlist or song that you want to embed
#2. Choose Share , then click Embed playlist
#3. Next, click Copy
#4. Edit the Squarespace page you want to embed Spotify > Add a Code Block
Paste the embed code
#5. Result