Apple Music is an ad-free streaming music service that lets you listen to millions of songs and your music library. As a subscriber, you can listen any time—online or off—and create your own playlists, stream and download lossless and Dolby Atmos audio files, get personalized recommendations, see music your friends are listening to, watch exclusive video content, and more.
You can subscribe to Apple Music or to Apple One, which includes Apple Music and other services. See the Apple Support article Use SharePlay to watch and listen together in FaceTime on iPod touch