Music is now missing from my icloud account
I realised that a recent album purchase, which is showing in Music on my iMac, hadn't synch'd with either my iPad or iPhone. I signed in to my icloud account hoping to find more information, but found that Music is no longer showing there at all. Can anyone help with what could have happened and how to get Music (and all my songs etc) featuring in my icloud account again? Thank you in advance.
iMac 21.5″, macOS 13.6