For example one of my most played artists on Apple music is "Various Artists" ;p
The way people (like me) listen to classical music is different from the way they listen to other kinds of music. For example, I might want to listen to Beethoven's String Quartet No. 12. This has four movements, and I want the player to play from movement 1 through movement 4 once I touch the play button. This is very different from wanting to play (say) Price Tag by Jessie J which is one track.
Furthermore, the meta data standards for music do not work that well for classical music. It requires some thoughtful manipulation to present the meta data correctly for this genre. For example, if you search for Mozart's Don Giovanni on Apple Music, and you are looking for a particular track, you may see something like this:
"1. Mozart, Don Giovanni Act ....." "2. Mozart, Don Giovanni Act ....." "3. Mozart, Don Giovanni Act ....."
Now the "Track Title" meta data field for track 2 probably has something like this:
"2. Mozart, Don Giovanni Act 1: Notte e giorno faticar"
If the programmers of Apple Music had read the spec carefully, they would have learned that the part of the track title after the colon is the actual track title, so they should show that first.
There are other issues with the meta data, but I tried the Apple Classical music player last night, and it is good. Finally a music player that works for me, not against me.
Choosing Don Giovanni, I get a link to see more by Wolgang Amadeus Mozart, and a detailed description of Don Giovanni, K. 527, KV527. There's an Editor's Choice recording by Teodor Currentzis from 2016 (79 tracks, 2 hr 50 min), or five (with See All) Popular Recordings from 1960, 1986, 1991, 1960 again, and 1966, ranging from 2 hr 38 min (Herbert von Karajan, Vienna Philharmonic) to 3 hr (Philharmonia Orchestra). I'll choose the Editor's Choice.
Album art up top, I see (in dim gray) "Wolfgang Amadeus Mozart," (in large white type) "Don Giovanni, K. 527," and (in gray, but larger than the composer) "Teodor Currentzis," along with tiny type tell me that this was released in 2016 and is in Hi-Res Lossless. Then a large Play button, no Shuffle button as the normal Music app has.
The tracks are "Ouvertura" (5:12), Notte e giorno faticar (No. 1, Introduzione: Leporello) (1:30), Non sperar... you know what? You get the idea. The metadata is presented perfectly.
Last night I was listening to Rachmaninoff Symphony No. 2 by the London Symphony Orchestra, Sir Simon Rattle conducting, and it was presented perfectly as well.[0] And it sounded wonderful!
How is this any different from listening to an album or any other logical grouping of tracks with an order?
Sure you could just go to the album and play track 4, and pause when track 6 finishes. But this makes that a little easier to play and easier to add to playlists and such.
There's also all the other metadata differences. Maybe I really like this composer, but apple music has it listed under the performing orchestra. Maybe I really like this conductor. This breaks all those out into different options.