Educational institutions and employers restrict access to sites like Spotify to:
Downloading unofficial, "unblocked" versions of the Spotify app (often called "Premium APKs") for Android to bypass restrictions like ads and shuffle-only modes. spotify unblocked 66 free upd
Sometimes, administrators only block the desktop application but forget about the web interface. spotify unblocked 66 free upd
Proxy sites display the Spotify interface or stream audio files through an unrelated domain name. The network firewall only sees traffic moving to an innocent-looking URL, leaving the underlying music stream unblocked. Embedded Web Players spotify unblocked 66 free upd