Does consolidating library do
My music — at least for me — is one of those must-backup items; I don't want to have to manually re-build or re-buy thousands of tracks.
If you use i Cloud Music Library or the i Tunes Store, you may have some or all of your music stored in the cloud.
If you're not employing a Mac-wide backup service (really, you should get on that), or if you just want to manually back up your i Tunes library separately, here's how to go about that.
When you restore a backup on a new Mac, it will typically include i Tunes.
Alternatively, you can backup and restore your i Tunes Library using an external drive by following the steps in this article.
If you are about to do something wild with your i Tunes library and don't have a way to back it up on an external drive or online backup service, you can make a backup that you store right on your Mac.
This is, by no means, a solid backup plan, but can be useful in a pinch.