Apple has built a handsome, robust app and service that goes well beyond just offering a huge catalog of music by providing many ways to discover and group music for a very wide range of tastes and moods. But it’s also uncharacteristically complicated by Apple standards, with everything from a global terrestrial radio station to numerous suggested playlists for different purposes in different places. And the company offers very little guidance on how to navigate its many features. It will take time to learn it. And that’s not something you’re going to want to do if all you’re looking for is to lean back and listen.