Don't know if anyone else cares, but this made my day.
One of the weird things I always found about Spotify was that while it has the majority of the music I listen to (really obscure ambient or trance music that they can buy up for cheap), and it has the popular music on the radio at the moment (which I ignore), it never has had a good collection of classic rock or music from 1950-1980 or so. This is very very very good news they are attempting to get into this in my opinion. It's probably a huge legal battle to get the classic music on there though since the classic music copyright owners are the same types of people who try to own the money-making television shows and movies and resist Netflix, Prime, and other streaming services. Yet the royalties they would reap from just simply letting classic music land on music streaming services would help reduce piracy of their own music and end up getting the classic music listeners onto Spotify and other services.