MiniPlay is an open source extension for Google Play Music, Pandora, and Spotify Web that lets you control them directly with keyboard shortcuts and a miniplayer. You can choose from the built-in playlists, add your own playlist, and even create one from the music library. You can also enable or disable all the settings in the extension so it doesn't run in the background. The music player features play/pause, volume, and repeat buttons as well as album and song art. You can also choose to get notified whenever a new track is added to your library or the playlist, as well as the current playing or next/previous track.