As a YouTube Premium member, you can only stream music-related videos on one device at a time. This limitation can apply to any video on YouTube that's categorized as music, such as a music video or certain videos with music playing in the background. If you're streaming a music-related video, and you begin streaming a second music-related video from another device, you'll see this error message on the first device: "Playback paused because your account is being used in another location." The second video will continue playing.
We recommend having separate individual YouTube accounts to avoid this issue. If several members of your family would like to join YouTube Premium, you can sign up for a YouTube Premium family plan. All family members included in your family plan will get access to YouTube Premium.
Note: The streaming limit also applies to browsers on the same device. Different browsers on same hardware/OS (e.g. Firefox and Chrome) will count as separate devices.