Music I paid for

You should still have access to any music you PURCHASED from the iTunes Store.

Redownload music - Apple Support

However, any music you LEASED with an Apple Music subscription (even if you downloaded it) will be removed if you cancel your subscription or let it expire. You didn't pay for that music. You only rented it to play on your Apple approved devices. It is copy-protected.

You will keep any music that you purchased from iTunes, even if you stop paying for Apple Music. You’ll also keep any music that you imported to your library from things like CDs or music files. Music you buy from iTunes will still appear on all your Apple devices. However, if you want imported music to keep appearing on all your devices, you’ll have to sync your devices using Music on Mac or you’ll want to pay the $25 for iTunes Match each year.