How do I find music copied from CD's that is now missing from my iTunes library? I have subscribed to itune match.

Good Afternoon Elliotsmum,

I understand you are not seeing songs that you imported from CDs into your iTunes library since you subscribed to iTunes Match, is that right?

Take a look at the attached resource that explains how to troubleshoot iTunes Match.

Resolve issues with iTunes Match - Apple Support
https://support.apple.com/en-us/HT204406

You can also use the Spotlight application on your computer to find your song. Type the name of the song in the search field when you open Spotlight.

Mac Basics: Spotlight helps you find what you're looking for - Apple Support
https://support.apple.com/en-gb/HT204014

Finally, if you have a Time Machine backup of your computer, you can go back in time before you started using iTunes Match to see if the song you are missing was actually in your library.

Mac Basics: Time Machine backs up your Mac - Apple Support
https://support.apple.com/en-us/HT201250

If for some reason you still cannot find a song that should be in your iTunes Library, you would have to re-import the music from the CD. Here's how:

http://help.apple.com/itunes/mac/12/#/itns2935

I hope this information helps ...

- Judy