Rooahroo opera singing mostly, which means "You're home you're home you came hooome muuuuuuuum!" And further rooarraows which means in a singsong voice "A WALK a WALK we are going a walk!" Soft aroos mean "I love you" Various tones of low roo sounds mean she needs me to notice something, to warn me about something, or wants me to open a door or is not feeling well.
Other talking includes letting me know about the other dogs around us and whether or not they are safe and friendly. We have big conversations about this. There's also "I'm sleepy, I'm doing a big yawn mum look" There's the obvious danger growl. Sometimes she'll tell me about how comfortable she is, or will soon be. We properly talk and have conversations, she is very good at expressing herself. Or I understand her well. Both.