sudo apt install curl
curl -sS https://download.spotify.com/debian/pubkey_0D811D58.gpg | sudo apt-key add -
echo "deb http://repository.spotify.com stable non-free" | sudo tee /etc/apt/sources.list.d/spotify.list
sudo apt update
sudo apt install spotify-client
You can launch it by searching for “Spotify” from the Application menu.