How can I permanently deselect/exclude music from cloud backup?

[Joshuaf59]

I get an error with each backup indicating the backup was not completed because the music data is to large. I can deselect it each time and run the backup, but I can't figure out how exclude it by default (like my voice recording is- greyed out)

 

[DanPLC]

I have the same problem on my Note 9. Can anyone figure out how to do this?