Users of streaming services generally fell somewhere on the following spectrum:h throughout:  

Hoarders:

• Have a large library that they add to from time to time
• Are more selective about what they listen to

Nomads:

• Rely on playlists/curated content
• Are probably already using Spotify

Apple Music sits at the Hoarder side of the spectrum. Open an Apple Music playlist and you’ll probably find this in the description: If you hear something you like, add it to your library.