If you subscribe to Apple Music, you can host a SharePlay session on your Apple TV so that anyone in your home can control music playback. Anyone can join using the Music app on their device even if they don’t have an Apple Music subscription.
Go to the Music app .
If you haven’t used SharePlay on Apple TV before, use the onscreen keyboard and profile icon picker to choose how you’ll appear in playlists in shared sessions. When you’re finished, select Done.
On your iPhone or iPad, open the camera app, scan the QR code that appears on your TV screen, then tap Connect on the device.
On Apple TV, select the SharePlay request notification, then select Work out together using SharePlay on Apple TV