Presenting Apple Music on Mac. The new Apple Music app is the ultimate music streaming experience on Mac. 1 Explore a library of 60 million songs, discover new artists and tracks, find the perfect playlist, download and listen offline, or enjoy all the music you’ve collected over the years. Version 10.6: 'Snow Leopard' Mac OS X Snow Leopard was released on August 28, 2009, the last version to be available on disc. Rather than delivering big changes to the appearance and end user functionality like the previous releases of Mac OS X.