Also, I couldn't find a way to preview a song to see whether it's one I want to buy. Searching for the song works, but when I press the play arrow to preview it

Also, I couldn't find a way to preview a song to see whether it's one I want to buy. Searching for the song works, but when I press the play arrow to preview it, I'm prompted to join Apple Music. Canceling that prompt just returns to the search results, so there's no way to hear the song!