YouTube Music Hotkeys is a Chrome browser extension that allows users to control background playback of YouTube Music without the need to switch tabs. With this extension, users can easily toggle playback, go to the previous or next song, and even open and pin YouTube Music if it is not already open.

The extension offers a convenient browser action button, which can be accessed with a left-click to toggle playback or a context-click to display more options. Additionally, users can customize the default shortcuts for toggling playback, going to the previous song, and going to the next song.

One notable feature of YouTube Music Hotkeys is its ability to autoplay when the "&autoplay=true" parameter is found in the URL. This ensures a seamless listening experience for users.

Overall, YouTube Music Hotkeys is a useful tool for anyone who frequently uses YouTube Music and wants to enhance their control over playback without interrupting their browsing experience.