Change the sound quality of a stream

This isn't in every copy of Music, and not every service offers a choice. SoundCloud and YouTube Music do.

1. Start a streamed song and open Now Playing.
2. Under the seek bar, Music shows the format of the song. If it shows a small arrow, tap it.
3. Tap a format.

The song switches to that format where you are, and Music keeps your choice for that service's next songs. If a song doesn't have that format, Music uses the best one it has.