ITunes is the world’s best way to play — and add to — your collection of music, movies, TV shows, apps, audiobooks, and more. Right on your Mac or PC. Browse and download Music apps on your Mac from the Mac App Store. The Mac App Store has a wide selection of Music apps for your Mac.
Apple's service can be great for letting you stream content from multiple music libraries (say, your work Mac's library and home Mac's library) on one computer; even better, you can also use it to consolidate your iTunes library if you're trying to make. What you need to know before downloading iCloud Music Library stores music you've purchased on any device, uploaded or matched from your Macs, and any subscription content you may have downloaded from Apple Music. It won't store items like PDFs or full uploads of WAV files you may have recorded, however. If you have some of those types of files on a work computer you're trying to consolidate to your home library, you'll need to manually move them to your other Mac.
Purchased, uploaded, and matched music remains yours forever after you've downloaded it — it can't be removed from your library or rendered unplayable. (Purchased music may need to be authorized with your Apple ID, however.) In contrast, Apple Music-branded subscription tracks are only downloadable and playable while you have an active Apple Music subscription; cancel your subscription, and those tracks are rendered inert.You can check to see on your Mac before downloading, and even organize them by type. If your Mac's hard drive is too small to fit your entire music collection, you may need to.