question
I can't download purchased music from iTunes. I bought many music in year 2013 and I don't see it on my library. ID of order M2XN55SNWF. TOM
iOS 11.2
Posting order numbers on here is pointless, we are just fellow users.
If the music is not showing in the Purchased section for redownloading check to see if you've hidden it from there : Hide and unhide apps for your iPhone, iPad, iPod touch, or Mac - Apple Support
But if the music is no longer in the store, or if you've moved countries since buying it, you won't be able to redownload it, you will have to sync it back to your iOS device from your computer (assuming that you have a copy of it somewhere)