How Do I Load Archived Music From a Disc Into Apple’s Music App?

How do you import archived music into the new music app on a Mac-mini?
The reason I am trying to import music is that my older iMac crashed and the music in iTunes was lost. I did have a few data DVDs that had my music on them.
When taking with Apple support on another problem (not involving music) they mentioned that with the new music app, I could not load any music onto my new Mac-mini via super drive as I suggested since that is what I was planning on doing… (I haven’t bought the super drive yet).
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Millard Grubb