How to collaborate on playlists in Apple Music

I used to enjoy sharing my favorite new music with friends and family via a carefully compiled piece of physical media. Sadly for those of us above a certain age, the switch to digital and streaming music has made the mixtape (or the mix CD) redundant. However, while streaming music apps may have killed off the mixtape, they’ve brought with them collaborative playlists: being able to easily compile a list of tunes with other people, even if those people aren’t in the same physical place…