Q: How to recover music from the cloud?

Can you give us any details about how you loaded it to the cloud? Was it iCloud? Did you use a computer to mirror your cloud files?

Your profile says you are running Leopard (OS X 10.5), which was released in 2007.  Leopard pre-dates iCloud.  Is this really the operating system you are using?

Are you using Apple Music?  Are you using iTunes Match?

You failed to answer:

"Are you using Apple Music?  Are you using iTunes Match?"

If not, there is nothing "up loaded to the cloud."

See if these instructions from Apple help:

If you don't see your content after you update iTunes - Apple Support