um, isn't that just the Apple Music paid subscription service, their Spotify competitor? They only advertise ("over") 100M songs though, I'm not sure where the extra 20M come from.
Sure, but it really can't be as simple as paying $10 for the month and looping through the entire catalog and downloading it...right? Did nothing in their system catch millions of simultaneous track requests and a petabyte+ data transfer for a single user?
https://music.apple.com/subscribe